| 单词 | medullary |
| 例句 | "Once I started talking about medullary thyroid cancer, a lot of people ended up finding me," he said. Father who was given months to live speaks out on thyroid cancer misconceptions 2021-09-14T04:00:00Z The inner layer of the bone that lines the medullary cavity is called the endosteum. Fundamentals of Biology 2015-01-01T00:00:00Z Hillman’s family posted on his Instagram account Wednesday that he was diagnosed in August with a rare form of kidney cancer called renal medullary carcinoma and was under hospice care. Former Broncos RB Ronnie Hillman dies at 31 2022-12-22T05:00:00Z The bony callus is then remodelled by osteoclasts and osteoblasts, with excess material on the exterior of the bone and within the medullary cavity being removed. Biology for AP Courses 2022-06-09T00:00:00Z Figure 6.8 Periosteum and Endosteum The periosteum forms the outer surface of bone, and the endosteum lines the medullary cavity. Anatomy and Physiology 2013-06-19T00:00:00Z The lab examined them “by transmitted and incident light microscopy” that included “root structure, medullary structure and cuticle thickness in addition to scale casts,” wrote Cochran. Oh, deer: Documents reveal FBI once tested hair an Oregon man thought was from Bigfoot 2019-06-05T04:00:00Z The diaphysis contains compact bone surrounding a medullary cavity containing bone marrow On either end is an epiphysis containing cancellous or spongy bone. Fundamentals of Biology 2015-01-01T00:00:00Z Some dinosaur fossils are argued to be breeding females thanks to the presence of medullary bone - most famously in a specimen of T. rex. How do you sex a fossil? | Elsa Panciroli 2018-01-24T05:00:00Z The arcuate “bow shaped” arteries form arcs along the base of the medullary pyramids. Biology for AP Courses 2022-06-09T00:00:00Z They die in the calcified matrix that surrounds them and form the medullary cavity. Anatomy and Physiology 2013-06-19T00:00:00Z Cometriq is approved for medullary thyroid cancer, but that disease is so rare that the drug is only generated $25 million last year. Exelixis Drug Slows Kidney Cancer In New Chance For Embattled Biotech 2015-07-20T04:00:00Z The cavity at the center of the bone is called the medullary cavity. Fundamentals of Biology 2015-01-01T00:00:00Z In 2005, researchers noted that some T. rex fossils contain bone tissue similar to the medullary bone of modern female birds, for which it provides a short-term reservoir of calcium to produce eggshells3. Tails tell the tale of dinosaur sex 2015-04-09T04:00:00Z The DCT, which is the last part of the nephron, connects and empties its contents into collecting ducts that line the medullary pyramids. Biology for AP Courses 2022-06-09T00:00:00Z The hollow region in the diaphysis is called the medullary cavity, which is filled with yellow marrow. Anatomy and Physiology 2013-06-19T00:00:00Z A microscopic image of medullary carcinoma of the colon. Why I Got My Colonoscopy...And You Should, Too 2014-11-21T05:00:00Z The medullary cavity in this region is filled with the mesh like spongy bone. Fundamentals of Biology 2015-01-01T00:00:00Z "The peculiarity of this case is that the tip of the harpoon lodged itself between the anterior vertebral canal and the medullary canal," he said. Woman survives harpoon shooting 2013-05-09T14:30:49Z The collecting ducts collect filtrate coming from the nephrons and fuse in the medullary papillae. Biology for AP Courses 2022-06-09T00:00:00Z A hollow medullary cavity filled with yellow marrow runs the length of the diaphysis of a long bone. Anatomy and Physiology 2013-06-19T00:00:00Z When Mary H. Schweitzer of North Carolina State University examined the broken thighbone of the T. rex, she spotted medullary bone. How Did Dinosaurs Have Sex? (preview) 2013-03-29T11:45:03.047Z To simplify the diagram the medullary sheathes of such fibers as would have them have been omitted. Being Well-Born An Introduction to Eugenics 2012-05-22T15:16:53.140Z These changes, which consist essentially in a medullary infiltration of these glands, will be minutely described presently. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Osteoclasts then break down some of the spongy bone to create a marrow, or medullary, cavity in the center of the diaphysis. Biology for AP Courses 2022-06-09T00:00:00Z The medullary cavity has a delicate membranous lining called the endosteum. Anatomy and Physiology 2013-06-19T00:00:00Z Moreover, the living cells of the medullary rays exposed by the wound on the wood-surface also grow out under the released pressure, and form protruding callus pads on their own account. Disease in Plants 2012-03-01T03:00:22Z The central nervous system in Bdellostoma develops by the overarching of medullary folds, not out of a solid keel as is the case with the lampreys. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z Under the microscope the medullary infiltration upon which the enlargement of the glands depends is found to be due to proliferation of the cellular elements. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z It is also traversed by medullary rays, Mr, which are continuations of those in the wood. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z Osteoclasts resorb old bone that lines the medullary cavity, while osteoblasts, via intramembranous ossification, produce new bone tissue beneath the periosteum. Anatomy and Physiology 2013-06-19T00:00:00Z Such healing may be rendered more certain by keeping the wounded surface moist—e.g. by means of damp moss, and so encouraging the formation of callus-bridges from the medullary rays. Disease in Plants 2012-03-01T03:00:22Z Wavy and curly, or smooth and silky, oval in section, with medullary tube but no pith. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z The epidermoid cancers are less likely to recur after early removal; the medullary cancers are of rapid growth and prone to ulceration; while the fibrous or scirrhous forms are of extreme slowness of growth. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z A longitudinal section made from bark to centre, as when a log is "quarter-sawed," shows a full side view of the "medullary rays." Trees Worth Knowing 2011-10-13T02:00:48.357Z These enlarging spaces eventually combine to become the medullary cavity. Anatomy and Physiology 2013-06-19T00:00:00Z Peridermium, the hyphae of which invade the medullary rays and resin canals and thus open the way to an outflow through cracks in the bark. Disease in Plants 2012-03-01T03:00:22Z The medullary rays usually consist of a single tier of cells, but in the Pinus type of wood broader medullary rays also occur and are traversed by horizontal resin-canals. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z Again, it is found that opening a large medullary cavity may be attended with danger to the patient. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z It has been often noted that, among these tumors, fluid-containing cysts and soft medullary cancers are far more frequently the cause of decided and distressing neuralgia than the denser and less yielding neoplasms. Neuralgia and the Diseases that Resemble it 2011-10-03T02:00:31.460Z The erosion of old bone along the medullary cavity and the deposition of new bone beneath the periosteum not only increase the diameter of the diaphysis but also increase the diameter of the medullary cavity. Anatomy and Physiology 2013-06-19T00:00:00Z In many of these cases the dying-back of the twigs is expedited owing to the mycelium invading the medullary rays and wood vessels, and so obstructing the transpiration current. Disease in Plants 2012-03-01T03:00:22Z An anatomical peculiarity in the veins of Pinus and several other genera is the continuity of the medullary rays, which extend as continuous plates from one end of the leaf to the other. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z He shows each to be "a young plant developing itself upwards, downwards and horizontally, into stem, root, and medullary system." American Pomology Apples 2011-10-03T02:00:29.477Z The groove between them is the medullary groove, and ultimately they fold over and unite to form the neural canal. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z These vessels could be in the periosteum, osteons, and/or medullary cavity. Anatomy and Physiology 2013-06-19T00:00:00Z The head was not particularly loaded with blood, nor were the bloody points, in the medullary substance, very abundant. Observations on Madness and Melancholy Including Practical Remarks on those Diseases together with Cases and an Account of the Morbid Appearances on Dissection 2011-08-23T02:00:29.227Z The large medullary rays give to the wood a characteristic parenchymatous or lax appearance, which is in marked contrast to the more compact wood of a conifer. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z The medullary substance when cut into was full of bloody points. Observations on Insanity With Practical Remarks on the Disease and an Account of the Morbid Appearances on Dissection 2011-08-14T02:00:24.997Z Obviously the effect of this is to transform what was the groove into a closed cavity or canal, which is therefore now termed the medullary canal. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z Figure 14.20 Auditory Brain Stem Mechanisms of Sound Localization Localizing sound in the horizontal plane is achieved by processing in the medullary nuclei of the auditory system. Anatomy and Physiology 2013-06-19T00:00:00Z When the medullary substance was cut into, there oozed from many points a quantity of dark blood, indeed the whole head was loaded with venous blood. Observations on Madness and Melancholy Including Practical Remarks on those Diseases together with Cases and an Account of the Morbid Appearances on Dissection 2011-08-23T02:00:29.227Z When tracheids occur in the medullary rays of the xylem these are replaced in the phloem-region by irregular parenchymatous cells known as albuminous cells. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z The medullary substance, afforded hardly any bloody points when cut into. Observations on Insanity With Practical Remarks on the Disease and an Account of the Morbid Appearances on Dissection 2011-08-14T02:00:24.997Z These two cerebral hemispheres, therefore, arise, in the first place, as lateral enlargements of the anterior part of one of the primitive constrictions of the medullary canal. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z The defining landmark of the medullary- spinal border is the pyramidal decussation, which is where most of the fibers in the corticospinal tract cross over to the opposite side of the brain. Anatomy and Physiology 2013-06-19T00:00:00Z The medullary substance, when cut into, was full of bloody points. Observations on Madness and Melancholy Including Practical Remarks on those Diseases together with Cases and an Account of the Morbid Appearances on Dissection 2011-08-23T02:00:29.227Z It is of interest to note that the leaves of Gnetum, while typically Dicotyledonous in appearance, possess a Gymnospermous character in the continuous and plate-like medullary rays of their vascular bundles. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z When the medullary tube of the notochord enlarges to form the brain the end of the head bends over to make room for that enlargement. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z "Effect of medullary raphe lesions on sexual behavior in male rats with or without treatments of p-chlorophenylalanine." Serotonin and Sexual Preference: Is it really that simple? 2011-03-28T13:45:07.673Z This collection of medullary nuclei regulates cardiac function, as well as blood pressure. Anatomy and Physiology 2013-06-19T00:00:00Z When the medullary substance was cut into, blood oozed from it; and, upon squeezing it, a greater quantity could be forced out. Observations on Madness and Melancholy Including Practical Remarks on those Diseases together with Cases and an Account of the Morbid Appearances on Dissection 2011-08-23T02:00:29.227Z As the tree grows larger, new, or secondary medullary rays start from the cambium then active, so that every year new rays are formed both thinner and shorter than the primary rays, Fig. Wood and Forest 2011-03-01T03:00:42.647Z It is close-grained, free from knots, without apparent medullary rays, and is hard and tough, but will not take a polish. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z In a vertical transverse section each gland is seen to consist of two parts, cortical and medullary. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z We recommend genetic testing for all of our patients with medullary thyroid cancer. Consults: Toxins, Genes and Thyroid Cancer 2010-10-21T18:31:00Z The medullary substance afforded hardly any bloody points when cut into. Observations on Madness and Melancholy Including Practical Remarks on those Diseases together with Cases and an Account of the Morbid Appearances on Dissection 2011-08-23T02:00:29.227Z Spruce is hardly distinguishable from fir, except by the existence of the resin ducts, and microscopically by the presence of tracheids in the medullary rays. Wood and Forest 2011-03-01T03:00:42.647Z Results from a Phase 3 trial of XL184 in patients with medullary thyroid cancer are expected in the first half of next year. Bristol returns cancer drug XL184 to Exelixis 2010-06-21T03:57:00Z Each lobe is divided into a large number of lobules divided by areolar tissue, and each of these, under the microscope, is seen to consist of a cortical and medullary part. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Its diseases arise from improper food, and are to be remedied by sapid medicines; while those of the medullary system are cured by olid substances. Lives of Eminent Zoologists, from Aristotle to Linnæus with Introductory remarks on the Study of Natural History The Roman numerals indicate the body somites and the two figures are adjusted for comparison. ce, Cerebral arteries; sp, supra-spinal or medullary artery; c, caudal artery; l, lateral anastomotic artery of Limulus. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" MS, medullary sheath, the dark, irregular ring just inside the bundles. Wood and Forest 2011-03-01T03:00:42.647Z The coenenchyma is further differentiated into a medullary portion and a cortex. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" To the naked eye the cortical part is yellow while the medullary is red. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Still later, the wedges filling the space, separated only by the thin lines, or medullary rays, running from pith to bark. The Elements of Botany For Beginners and For Schools The roof of the fourth ventricle widens out very much and remains largely epithelial as the superior and inferior medullary vela. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" MR, medullary rays, lines between the bundles connecting the pith and the cortex. Wood and Forest 2011-03-01T03:00:42.647Z The medullary portion is densely crowded with spicules of different shape from those in the cortex, and in some forms the spicules are cemented together to form a hard supporting axis. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Only a part of the marrow, the so-called red marrow, is normally occupied by erythroblastic tissue, the rest of the medullary cavity of the bones being taken up by fat. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" Magnified view of surface of a bit of young Maple wood from which the bark has been torn away, showing the wood-cells and the bark-ends of medullary rays. The Elements of Botany For Beginners and For Schools Stretching between the two flocculi, and attached midway to the sides of the nodule, is a thin, white, semilunar-shaped plate of nervous matter, called the inferior medullary velum. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" As a permanent reserve food material, it occurs in seeds, in fruits, in tubers, in the pith, medullary rays and cortex of the stems of perennials, etc. The Chemistry of Plant Life They are hollow; and for this reason resemble, at first sight, the bones of birds rather than of reptiles; for the latter have no medullary cavity. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Every medullary thread, every centripetal and centrifugal filament in her entire body was excited over his coming. Belford's Magazine, Volume II, No. 8, January, 1889 The same people make bread of the medullary flour of this palm, which it yields in great abundance, if cut down just before going to flower.—Ibid., vol. iii. p. The Church of England Magazine - Volume 10, No. 263, January 9, 1841 The inferior medullary velum, a reflection of the pia mater and epithelium from the back of the medulla to the inferior vermis, closes it in below. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" It is said to be produced by the metamorphosis of the medullary rays under unfavorable conditions of growth. The Chemistry of Plant Life The bones of the skeleton are characterized by their slenderness and the great size of the medullary canals in those of the extremities. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 "Chicago, University of" to "Chiton" The timber bears a striking resemblance to that of the oak, which has been mistaken for chestnut; but it may be distinguished by the numerous fine medullary rays. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The external exhalants terminate on the skin and mucous membranes; the internal in the cellular and medullary tissues. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The lips of this medullary groove unite to form a canal beginning at the place where the neck of the embryo is to be. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" They are present so abundantly in the blood of medullary leukæmia as to impart to the whole picture a predominantly mononuclear character. Histology of the Blood Normal and Pathological It is due to an arrest of development, whereby the closure of the primary medullary groove and the ingrowth of the mesoblast to form the spines and laminæ fail to take place. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Its medullary rays," says Messrs. Lindley and Hutton, "appear to be more numerous, and frequently are not continued through one zone of wood to another, but more generally terminate at the concentric circles. The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland The gray border is called the cortical, or cineritious portion, while the white central portion is called the medullary. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The medullary spinal cord is larger and more developed than in the white man, but less so than in the monkey tribes. Cotton is King, and Pro-Slavery Arguments Comprising the Writings of Hammond, Harper, Christy, Stringfellow, Hodge, Bledsoe, and Cartrwright on This Important Subject It is of special importance to study the changes due to certain intercurrent diseases in the blood picture of medullary leukæmia. Histology of the Blood Normal and Pathological In overriding displacement, even the dense cortical bone intervening between the medullary canal of the two fragments is ultimately absorbed and the continuity of the medullary canal is reproduced. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. As for the medullary cord of the abdomen, it consists, as in the larva, of eight ganglia. The Glow-Worm and Other Beetles These ganglia are composed of a mixture of cineritious and medullary matter, and are supposed to be productive of peculiar nervous power. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) It is nothing but an expansion of the medullary part of the optic nerve, which is inserted into each eye, nearer the nose, and a little higher, than the axis. Popular Lectures on Zoonomia Or The Laws of Animal Life, in Health and Disease Sometimes the central canal is wide and uninterrupted between the two neuropores; in other cases it becomes broken up into a large number of small closed medullary cavities, and in others again it is obsolete. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" It may take the form of squamous epithelioma or of medullary cancer, and may originate in the tonsil, in the groove between the tonsil and the tongue, or in the soft palate. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. No bloody points were observed in the medullary portion of the brain, when cut. Cases of Organic Diseases of the Heart Pieces of the medullary, or central parts, have been removed by injuries without impairing the intellect or destroying life. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) These conditions admit of four combinations, all of which appear in the medullary rays of Pinus, and of which a schematic representation is given in Plate VII. The Genus Pinus Annual rings well marked, medullary rays broad and prominent. Seasoning of Wood Well known as the medullary part of the stem of a plant; but figuratively, it is used to express strength and courage. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. The roots of the parasite penetrate and split up the stalk even to the medullary canal. The $100 Prize Essay on the Cultivation of the Potato. Prize offered by W. T. Wylie and awarded to D. H. Compton. How to Cook the Potato, Furnished by Prof. Blot. In every part of the nervous system both substances are united, with the exception of the nervous fibres and filaments, which are solely composed of the medullary matter enclosed in a delicate sheath. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) Tracheids of the medullary rays with smooth walls. The Genus Pinus Because of the broad medullary rays, it is generally "quarter-sawn" for cabinet work and furniture. Seasoning of Wood This view is, however, inadequate, since we cannot regard the blood as analogous to the medullary substance of the nerve, or contractile substance of a muscular fasciculus. The World's Greatest Books — Volume 15 — Science The cortical surface of the brain appeared much browner than usual, but neither the medullary part nor cerebellum were impaired. An Essay on the Shaking Palsy If a striking contrast is wanted for the medullary rays of the quartering, apply a golden-oak stain first. Mission Furniture How to Make It, Part I Walls of the tracheids of the medullary rays dentate. The Genus Pinus It has broad medullary rays, and much of the timber has a beautiful figure. Seasoning of Wood Two substances, distinguishable by their color, namely, the white or medullary and the gray or cortical substance, enter into the formation of nervous matter. Special Report on Diseases of the Horse The medullary folds and notochord are evident at this stage, but no mesoblastic somites are to be seen. Development of the Digestive Canal of the American Alligator You understand, it is medullary: the most rapid, the most malignant variety of all. The Genius The kidneys presented a natural appearance; the adipose substance in which they were imbedded was œdematous; the medullary substance of each presented a yellowish colour. An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners The characteristic "figure" of oak is due to the broad and deep medullary rays so conspicuous in this timber, and the same applies to honeysuckle. Seasoning of Wood In the first they are surrounded by an external bony ring, and the medullary cavity is closed by a bony plug or stopper, constituting the period of the provisional callus. Special Report on Diseases of the Horse As is shown in figure 3D, the neurenteric canal, nc, still opens ventrally, though the medullary canal, mc, has now no dorsal opening to the exterior. Development of the Digestive Canal of the American Alligator The inturning of the medullary groove is entirely similar in the two cases. Text Book of Biology, Part 1: Vertebrata The sharp discrimination of cases of concussion from those of slight medullary hæmorrhage was necessarily impossible. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre The sap in the tree descends through the bark, and except in early spring is not present in the wood of the tree except in the medullary rays and living tissues in the "sapwood." Seasoning of Wood In this way it comes about naturally that organs which become differentiated rapidly, as, for example, the medullary tube, as a rule dominate earlier periods of ontogeny than do the organs of locomotion. Form and Function A Contribution to the History of Animal Morphology These are the primary medullary rays, and connect the pith in the centre of the stem with the bark. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Figure 3 answers to Figure 6 of the frog, and Figure 4 is a later stage, in which the medullary groove is beginning to close at its middle part. Text Book of Biology, Part 1: Vertebrata The important conditions for discriminative diagnosis are those of local compression, actual destructive lesion, whether from concussion changes, contusion, or medullary hæmorrhage, and partial and total section of the cord. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre Or, again, pronounced medullary rays further complicate the drying problem. Seasoning of Wood The "white matter" of the central system consists chiefly of axons with their enveloping or medullary, sheath and neuroglia. The Mind and Its Education The radiating lines are medullary rays. r, resin ducts. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses The medullary sheath and the primitive sheath are not, strictly speaking, parts of the nerve cell, but appear to be growths that have formed around it. Physiology and Hygiene for Secondary Schools The same may be said concerning cases in which transient symptoms followed the slighter degrees of surface and medullary hæmorrhage. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre The parenchyma cells of the medullary rays in oak do not cohere strongly and often check open, especially when steamed too severely. Seasoning of Wood In the white masses the medullary sheath is present. The Mind and Its Education C, cross-section of a two-year-old branch at the point where the two growth rings join: I, the cells of the first year’s growth; II, those of the second year. m, a medullary ray, × 150. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses The primitive sheath and the medullary layer protect the axis cylinder, and, according to some authorities, serve to insulate it. Physiology and Hygiene for Secondary Schools I think its presence may also be assumed in cases of total transverse lesion due to medullary hæmorrhage or severe concussion, accompanied by well-marked pain and hyperæsthesia above the level of paralysis. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre The softwoods are made up chiefly of tracheids, or vertical cells closed at the ends, and of the relatively short parenchyma cells of the medullary rays which extend radially from the heart of the tree. Seasoning of Wood It will help in understanding the peripheral system to remember that a nerve consists of a bundle of neurone fibers each wrapped in its medullary sheath and sheath of Schwann. The Mind and Its Education D, longitudinal section of a branch, showing the form of the tracheids and the bordered pits upon their walls. m, medullary ray, × 150. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses These, on entering, lose the medullary sheath and separate into a number of branches that penetrate the corpuscle in different directions. Physiology and Hygiene for Secondary Schools A section through the thallus of Peltigera canina, showing the cortex above and the medulla below, the medullary hyphae of the lower portion running in a somewhat horizontal direction. Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 The Ascomycetes of Ohio IV and V The medullary rays, although present, are scarcely visible in most instances. Seasoning of Wood Each one of the perforations is the entrance to an oblique tunnel, which is bored in the medullary sheath of the twig. Social Life in the Insect World The osteo-sarcoma is characterised by the formation in the tumour of bone, the medullary spaces being occupied by sarcomatous cells in place of marrow. Manual of Surgery Volume First: General Surgery. Sixth Edition. Axons without the medullary sheath are found in the sympathetic nerves. Physiology and Hygiene for Secondary Schools The fatty substance contained in the medullary canal of long bones and in the interstices of the cancellous bone. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada The vertical tubes are wood fibres, in this case all "tracheids." m, medullary or pith ray; n, transverse tracheids of ray; a, b, and c, bordered pits of the tracheids, more enlarged. Seasoning of Wood The external memory there presents the appearance of a callus, the internal the appearance of a medullary substance like that in the human brain; and from this what they are can be known. Heaven and its Wonders and Hell The medullary canal in the vicinity of the sequestrum being obliterated, is represented by a shadow of varying density, continuous with that of the surrounding bone. Manual of Surgery Volume First: General Surgery. Sixth Edition. Surrounding the axis cylinder is a thick, whitish-looking layer, known as the medullary sheath, and around this is a thin covering, called the primitive sheath, or neurilemma. Physiology and Hygiene for Secondary Schools They all "rot" the timber by destroying its structure and substance, starting from the cambium and medullary rays. Scientific American Supplement, No. 643, April 28, 1888 These bands or tiers of cell rows are the medullary rays or pith rays, and are common to all our lumber woods. Seasoning of Wood But medullary or fibrillary substance everywhere begins in and proceeds from the cortical; out of it nerves arise, and from them all things of the body. Angelic Wisdom Concerning the Divine Love and the Divine Wisdom The epithelioma originates at the skin orifice of the sinus, and spreads to the bone and into its interior, where the progress of the cancer is resisted by dense bone, which obliterates the medullary canal. Manual of Surgery Volume First: General Surgery. Sixth Edition. The medullary sheath may also aid in the nourishment of the axis cylinder. Physiology and Hygiene for Secondary Schools Prof. Hartig lately showed me longitudinal radial sections of oak timber thus attacked, and the medullary rays showed up as glistening white plates. Scientific American Supplement, No. 643, April 28, 1888 CS, cross-section; RS, radial section; TS, tangential section; mr, medullary or pith ray; a, height; b, width; and e, length of pith ray. Seasoning of Wood Of course, one cannot be expected to carry about a voltaic pile and go hunting for the medullary recesses of a savage and turbulent fish. Lippincott's Magazine of Popular Literature and Science October, 1877. Vol XX - No. 118 In long-standing cases it is common to find extensive obliteration of the medullary canal, and a considerable increase in the girth of the bone. Manual of Surgery Volume First: General Surgery. Sixth Edition. A nerve is a continuation of the medullary substance of the brain from the head or spine towards the other parts of the body, wrapped in its proper membrane. Zoonomia, Vol. I Or, the Laws of Organic Life A beetle deposits its eggs in the young canes; the caterpillars of these remain in the cane, living on its medullary parts, till they are ready to be metamorphosed into the chrysalis state. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. The large medullary rays of oak are often twenty and more cells wide, and several hundred cell rows in height, which amount commonly to one or more inches. Seasoning of Wood In fashioning a fulcral joint for the head, then, two different objects had to be secured: free mobility for the head, and a safe transit for the medullary part of the brain stem. A Book of Exposition The bones show a feeble shadow with the X-rays, and appear thin and atrophied; the medullary canal is increased at the expense of the cortex. Manual of Surgery Volume First: General Surgery. Sixth Edition. For the medullary substance of the brain not only occupies the cavities of the head and spine, but passes along the innumerable ramifications of the nerves to the various muscles and organs of sense. Zoonomia, Vol. I Or, the Laws of Organic Life If the force acts parallel to the axis of growth, the tracheids are more likely to be displaced if the marginal cells of the medullary rays are provided with weak walls that are readily compressed. The Mechanical Properties of Wood Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing The porous spring-wood and radial gray tracts are partly composed of smaller vessels, but chiefly of tracheids, like those of pine, and of shorter cells, the "wood parenchyma," resembling the cells of the medullary rays. Seasoning of Wood The ends of the bones are thus exposed, and their medullary cavities exposed to infection. Diseases of the Horse's Foot Disease of Child's Tibia, showing sequestrum in medullary cavity, and increase in girth from excess of new bone. Manual of Surgery Volume First: General Surgery. Sixth Edition. The muscular fibres are moving organs intermixed with that medullary substance, which is continued along the nerves, as mentioned above. Zoonomia, Vol. I Or, the Laws of Organic Life The microscope showed a great many air-vesicles both in the medullary substance and between the medullary and cortical substance. Anomalies and Curiosities of Medicine Rather close-grained, conspicuous medullary rays, and when quarter-sawn and well smoothed is very beautiful. Seasoning of Wood They are prolongations of the medullary substance of the central portion of the brain. The Dog It consists of two layers, an outer fibrous and an inner cellular layer; the cells, which are called osteoblasts, are continuous with those lining the Haversian canals and the medullary cavity. Manual of Surgery Volume First: General Surgery. Sixth Edition. The investment of nerve fibers with a protective covering or medullary sheath, consisting of white, fat-like matter. Youth: Its Education, Regimen, and Hygiene This noted operator performed, synchronously, double ovariotomy and resections of portions of the bladder and ileum, for a large medullary carcinomatous growth of the ovary, with surrounding involvement. Anomalies and Curiosities of Medicine The medullary rays in birch are very fine and close and not easily seen. Seasoning of Wood When the brain is cut, it is found to be composed of two substances, essentially different in construction and function—the cortical and the medullary. The Dog The process may remain localised to the ossifying junction, but usually spreads along the medullary canal for a varying distance, and also extends to the periosteum by way of the enlarged Haversian canals. Manual of Surgery Volume First: General Surgery. Sixth Edition. The larger medullary rays are absent, but the smaller ones are often very distinct, with pores between them. Scientific American Supplement, No. 362, December 9, 1882 Mrs. B. Yes, my dear; it is obtained from a plant which grows in the East Indies: the medullary, or pithy part of which, is beaten with water, and made into cakes. Domestic Pleasures, or, the Happy Fire-side The annual rings are very distinct, medullary rays very minute and not visible to the naked eye. Seasoning of Wood In the former, assimilation is exerted only on those substances that enter essentially into the composition of the bones, the muscles, and the medullary matter of the nerves and the brain. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 The extent of spread in the medullary canal and beneath the periosteum is in close correspondence. Manual of Surgery Volume First: General Surgery. Sixth Edition. The age is easily determined; the pith rays, or medullary rays, are also plain. Outlines of Lessons in Botany, Part I; from Seed to Leaf From this, I am convinced that the ball has shattered and deadened the bone, and now lies impacted in the medullary canal. White Jacket or, the World on a Man-of-War The annual rings are not distinctly marked, medullary rays fine and numerous. Seasoning of Wood The medullary substance of the brain displays but a feeble analogy with the albuminous and gelatinous matter of the electric organs. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 The new bone is laid down on the surface, in the Haversian canals, or in the cancellous spaces and medullary canal, or in all three situations. Manual of Surgery Volume First: General Surgery. Sixth Edition. These lie parallel in the medullary or central structure, but On reaching the cortical or outer layer, they wind about and interlace, ending, at last, in dilated closed sacs called Malpighian capsules. A Practical Physiology The brain is very rudimentary at first, a mere bulbous enlargement of the fore end of the medullary tube. The Evolution of Man — Volume 2 Wood coarse-grained, well-marked annual rings, medullary rays few but broad. Seasoning of Wood The broad ectodermal fold that first appears in the middle line of the flattened dorsal surface, and forms a shallow longitudinal groove, is the beginning of the central nervous system, the medullary tube. The Evolution of Man — Volume 1 The presence of fat and bony particles in the pus confirms the medullary origin of the suppuration. Manual of Surgery Volume First: General Surgery. Sixth Edition. Note on the cut surfaces, on the outer side, the darker cortical portion, and on the inner side, the smooth, pale, medullary portion. A Practical Physiology The first rudiment of it is always a simple vesicular enlargement of the fore end of the medullary tube. The Evolution of Man — Volume 2 A large part of the wood is formed by the medullary or pith rays. Seasoning of Wood On its dorsal side we find in the middle line the straight medullary furrow, bordered by the two parallel dorsal or medullary swellings. The Evolution of Man — Volume 1 This formation of new bone is much in excess of the normal, the bones become large and bulky, their surfaces rough and uneven, their texture sclerosed in parts, and the medullary canal is frequently obliterated. Manual of Surgery Volume First: General Surgery. Sixth Edition. This core is surrounded by the white substance of Schwann, or medullary sheath, which gives the nerve its characteristic ivory-white appearance. A Practical Physiology Under this is a soft medullary substance, which consists of entodermic cells with vacuoles. The Evolution of Man — Volume 2 This shell does not prevent the interior from drying, but when this drying occurs the interior is commonly checked along the medullary rays, commonly called "honeycombing" or "hollow-horning." Seasoning of Wood As the upper edges of two opposing somites grow together over the medullary tube from right and left, the vertebra-arch becomes closed. The Evolution of Man — Volume 1 Around the cavity the bone is sclerosed, and the medullary canal is obliterated. Manual of Surgery Volume First: General Surgery. Sixth Edition. They are gray, while the ordinary medullary fibers are white in appearance. A Practical Physiology The medullary tube would be originally a chemical sensory organ, a dorsal olfactory tube, taking in respiratory-water and food by the neuroporus in front and conveying them by the neurenteric canal into the primitive gut. The Evolution of Man — Volume 2 However, with some species, notably oak, surface cracks appear as a network of fine checks along the medullary rays. Seasoning of Wood The two parallel dorsal or medullary swellings that enclose it grow together over it afterwards, and form the medullary tube. The Evolution of Man — Volume 1 The softer medullary forms are composed almost exclusively of cells; while the harder forms—such as the fibro-, chondro-, and osteo-sarcoma—are provided with an abundant stroma and are relatively poor in cells. Manual of Surgery Volume First: General Surgery. Sixth Edition. At the ends of a long bone, where it expands, there is no medullary canal, and the bony tissue is spongy, with only a thin layer of dense bone around it. A Practical Physiology But the medullary tube of the Vertebrates originates in the same way. The Evolution of Man — Volume 2 They make bread of the medullary flour of this palm-tree, which is the sago of America. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 Thus is formed the dorsal wall, and the medullary tube takes up a position inside the body. The Evolution of Man — Volume 1 If the alveoli are large and the intervening stroma is scanty and delicate, the tumour is soft and brain-like, and is described as a medullary or encephaloid cancer. Manual of Surgery Volume First: General Surgery. Sixth Edition. Short and irregular bones have no medullary canal, only a thin shell of dense bone filled with cancellous tissue. A Practical Physiology The medullary tube of the Chordonia has been formed by the lengthening of the vertical brain on the dorsal side. The Evolution of Man — Volume 2 It is important to note that some of these gigantic lycopods, which are classed with the CRYPTOGAMS, or flowerless plants, had pith and medullary rays dividing their cylinders into woody wedges. The Elements of Geology There are then two completely closed canals over each other—the medullary tube above and the gastric tube below, the two being separated by the chorda. The Evolution of Man — Volume 1 Rows of these tubercles are arranged spirally round each root, which have always a medullary axis and woody system much resembling that of Sigillaria, the structure of the vessels being, like it, scalariform. The Student's Elements of Geology In cardiac failure, as the systolic pressure falls the diastolic is likely to be increased, and the pressure pulse thus diminishing, allows insufficient blood to go to the medullary centers, and death soon occurs. Disturbances of the Heart Nevertheless, as we know from human embryology, the medullary tube is formed from the cutaneous layer. The Evolution of Man — Volume 2 In many cases the medullary orifice had been enlarged to make it easier to get out the marrow. Manners and Monuments of Prehistoric Peoples The closing of the medullary tube is effected from both sides, the edges of the groove joining together from right and left. The Evolution of Man — Volume 1 Such a process of petrifaction is still more remarkably exhibited in fossil wood, in which we often perceive not only the rings of annual growth, but all the minute vessels and medullary rays. The Student's Elements of Geology But it would be equally absurd to presuppose that these several functions can be disarranged for months, without more or less disorganisation of the medullary, or even of the cineritious, matter of the encephialon. Hard Cash In the Cyclostoma—a stage above the Acrania—the fore end of the cylindrical medullary tube begins early to expand into a pear-shaped vesicle; this is the first outline of an independent brain. The Evolution of Man — Volume 2 There appears, also, to exist some relation between the arrangement of the hair on the limbs, and the course of the medullary arteries. The Descent of Man The coalescence of these two dorsal plates and the closing in the middle of the dorsal wall take place in the same way as the medullary tube, which is henceforth enclosed by the vertebral tube. The Evolution of Man — Volume 1 The fore-end of the medullary tube expands into a vesicle and forms the brain, which soon divides into five cerebral vesicles. The Evolution of Man — Volume 2 This groove is, of course, the dorsal furrow, and the swellings are the dorsal or medullary swellings; they form the first structure of the central nervous system, the medullary tube. The Evolution of Man — Volume 2 The whole central marrow is merely a simple cylindrical cord which runs the length of the body, and ends equally simply at both extremities—a plain medullary tube. The Evolution of Man — Volume 2 The perichorda forms a cylindrical tube immediately over the chorda, and the central nervous system, the medullary tube, is enclosed in it. The Evolution of Man — Volume 2 Afterwards we have the complete closing of the primitive mouth, the dorsal swellings joining to form the medullary tube and growing over it. The Evolution of Man — Volume 1 From the epidermis of the gastrula a medullary tube is formed on the dorsal side, and, between this and the primitive gut, a chorda; these are the organs that are otherwise only found in Vertebrates. The Evolution of Man — Volume 2 The chorda is of the same simple character in both; also the medullary tube, that lies above the chorda, and the alimentary canal below it. The Evolution of Man — Volume 2 It is the more interesting that the young animal that emerges from the ovum HAS a chorda, and that there is a rudimentary medullary tube above it. The Evolution of Man — Volume 2 In the earlier stages the alimentary tube is found to be entirely closed, after the closing of the primitive mouth; it only communicates behind by the neurenteric canal with the medullary tube. The Evolution of Man — Volume 2 This tube is of the utmost importance; it is the beginning of the central nervous system, the brain and spinal marrow, the medullary tube. The Evolution of Man — Volume 1 They do not begin to diverge until after the medullary tube and alimentary canal, and the axial rod with the muscles between the two, have been formed. The Evolution of Man — Volume 2 The medullary swellings now rise higher; the groove between them becomes deeper and deeper. The Evolution of Man — Volume 2 At the same time, the neural or medullary tube is formed above the chorda, on the dorsal surface, by the closing of the parallel medullary swellings. The Evolution of Man — Volume 2 Think of the tiny Amphioxus, with no real brain but a simple medullary tube, and its whole psychic life at the very lowest stage among the Vertebrates. The Evolution of Man — Volume 2 The formation of the alimentary canal resembles that of the medullary tube to this extent—in both cases a straight groove or furrow arises first of all in the middle line of a flat layer. The Evolution of Man — Volume 1 We meet the same simple medullary tube in the first structure of the ascidia larva, in the same characteristic position, above the chorda. The Evolution of Man — Volume 2 As the reader will remember, the straight medullary furrow first appears in the middle of the sandal-shaped embryonic shield. The Evolution of Man — Volume 2 At first there is a progressive development; the foremost part of the medullary tube enlarges into a brain, and inside this two single sense-organs are developed, a dorsal auditory vesicle and a ventral eye. The Evolution of Man — Volume 2 At each side of it the parallel borders curve over in the form of dorsal or medullary swellings. The Evolution of Man — Volume 2 This is the broader dorsal furrow or medullary groove, the first beginning of the central nervous system. The Evolution of Man — Volume 1 It originates in the shape of a simple medullary tube from the outer membrane of the embryo—the skin-sense layer. The Evolution of Man — Volume 2 In Figure C both the medullary tube and the dorsal wall above and the alimentary canal and ventral wall below are closed. The Evolution of Man — Volume 1 Thus, for instance, the chief part of the central nervous system is a long dorsal neural string that runs above the gut and corresponds to the medullary tube of the Chordonia. The Evolution of Man — Volume 2 The chordula-embryo of all the vertebrates is characterised by the dorsal medullary tube, the neurenteric canal, which passes at the primitive mouth into the alimentary canal, and the axial chorda between the two. The Evolution of Man — Volume 1 The oval shield in the centre also looks whitish, and in its axis we see the dark medullary groove. The Evolution of Man — Volume 1 It originates, it seems, out of the horn-plate at the side of the medullary tube, in the gap that we find between the provertebral and the lateral plates. The Evolution of Man — Volume 1 The prorenal duct is visible in this gap even at the time of the severance of the medullary tube from the horn-plate. The Evolution of Man — Volume 1 This insignificant relic of the medullary tube seems to be quite beyond comparison with the nervous centre of the vertebrate, yet it started from the same structure as the spinal cord of the Amphioxus. The Evolution of Man — Volume 2 |
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