| 单词 | choroid |
| 例句 | Along with the ciliary body and iris, the choroid forms the uveal tract. Fundamentals of Biology 2015-01-01T00:00:00Z A stick whacked him in the face and ruptured the choroid in the back of his left eye. Carl Hagelin, still recovering from injuries, isn’t ready to walk away 2023-04-21T04:00:00Z They are involved in the production of cerebrospinal fluid, which serves as a cushion for the brain, moves the fluid between the spinal cord and the brain, and is a component for the choroid plexus. Biology for AP Courses 2022-06-09T00:00:00Z The choroid plexus is a specialized structure in the ventricles where ependymal cells come in contact with blood vessels and filter and absorb components of the blood to produce cerebrospinal fluid. Anatomy and Physiology 2013-06-19T00:00:00Z Winger Carl Hagelin, who was hit in the left eye with a stick blade during practice March 1, ruptured the choroid in the back of his eye and had two surgeries. Besides aging core and goaltending, Capitals must answer injury questions 2022-05-15T04:00:00Z The eye has three layers or coats that make up the exterior wall of the eyeball, which are the sclera, choroid, and retina. Fundamentals of Biology 2015-01-01T00:00:00Z Hagelin has been out since taking a teammate’s errant stick to his left eye in practice March 1, rupturing the choroid so badly doctors considered removing it. Banged-up Capitals: Surgery possible for Backstrom, Wilson 2022-05-15T04:00:00Z It forms a barrier to blood vessels in the choroid and mops up harmful substances that are shed by photoreceptors in response to light. Reconstructing the retina 2018-09-04T04:00:00Z Cerebrospinal fluid is produced within the ventricles by a type of specialized membrane called a choroid plexus. Anatomy and Physiology 2013-06-19T00:00:00Z Laminin is also a component of the meninges2 and is present in a CNS structure called the choroid plexus, which is where immune cells and cells from solid tumours often enter the CNS3. Leukaemia follows a blood-vessel track to enter the nervous system 2018-07-17T04:00:00Z The choroid provides oxygen and nourishment to the outer layers of the retina. Fundamentals of Biology 2015-01-01T00:00:00Z Most clusters include cells from all samples, except for a cluster expressing blood genes and a cluster expressing choroid plexus epithelial cells that are mostly from animal WT5E. Aspm knockout ferret reveals an evolutionary mechanism governing cerebral cortical size 2018-04-10T04:00:00Z A, A suspension of retinal pigment epithelial cells derived from stem cells is injected into the distorted space above the choroid. Reconstructing the retina 2018-09-04T04:00:00Z The middle layer of the eye is the vascular tunic, which is mostly composed of the choroid, ciliary body, and iris. Anatomy and Physiology 2013-06-19T00:00:00Z The choroid provides oxygen and nutrients to the retina. Doctors Spot New Vision Problems in Babies Struck by Zika 2016-05-25T04:00:00Z Light enters the front of the eye through a hole in the choroid coat called the pupil. Fundamentals of Biology 2015-01-01T00:00:00Z Many of them also contain areas which look like choroid plexuses. Growing model brains: An embryonic idea 2013-08-29T15:01:23Z After a month, the fragments had organized themselves into primitive structures that could be recognized as developing brain regions such as retina, choroid plexus and cerebral cortex, the researchers explained in a telephone briefing. Scientists grow "mini human brains" from stem cells 2013-08-28T17:01:12Z The choroid is a layer of highly vascularized connective tissue that provides a blood supply to the eyeball. Anatomy and Physiology 2013-06-19T00:00:00Z It occupies the same position between the layer of rods and cones, or cones only, and the choroid. Old Flies in New Dresses How to Dress Dry Flies with the Wings in the Natural Position and Some New Wet Flies 2012-04-02T02:00:23.697Z The same view is held with regard to the origin of cysts frequently met with in the choroid plexuses. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Between the sclerotic and the subjacent choroid coat is a lymph space traversed by some loose pigmented connective tissue,—the 92 lamina fusca. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z The choroid c c, is embued with a black liquor, which serves to absorb all the rays that are irregularly reflected, and to convert the body of the eye, into a more perfect camera obscura. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z The choroid is posterior to the ciliary body, a muscular structure that is attached to the lens by suspensory ligaments, or zonule fibers. Anatomy and Physiology 2013-06-19T00:00:00Z As in the human eye, it adheres sometimes to the choroid and sometimes to the retina, when the retina is removed, though perhaps it most often adheres to the retina. Old Flies in New Dresses How to Dress Dry Flies with the Wings in the Natural Position and Some New Wet Flies 2012-04-02T02:00:23.697Z Inside this coating is a layer of black pigment cells termed the choroid. Visual Illusions Their Causes, Characteristics and Applications 2011-06-02T02:00:25.247Z On the deep surface of the choroid is a structureless basal lamina. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z The internal surface of the choroid, or rather the pigmentary layer which covers it, is lined by the retina or nervous tunic upon which the images of the objects that we see are focussed. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z In some of these spaces, CSF is produced by filtering of the blood that is performed by a specialized membrane known as a choroid plexus. Anatomy and Physiology 2013-06-19T00:00:00Z The choroid is slightly and unequally pigmented, no ophthalmoscopically assignable reason exists for the considerable visual defect. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The albinos, in whom these dark cells of the choroid are wanting, have imperfect vision, especially in the daytime and in strong lights. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers They are as vascular as the rest of the choroid, and contain in their interior the ciliary muscle, which consists of radiating and circular fibres. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Minute bands of muscle in the choroid can alter the convexity of the lens, and thus adapt its focus to the position of objects at different distances. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z Figure 13.18 Cerebrospinal Fluid Circulation The choroid plexus in the four ventricles produce CSF, which is circulated through the ventricular system and then enters the subarachnoid space through the median and lateral apertures. Anatomy and Physiology 2013-06-19T00:00:00Z The choroid plexus of the pia mater turns round the gyrus hippocampi, and enters the descending cornu through the lateral part of the great transverse fissure between the taenia hippocampi and optic thalamus. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" The Iris.—Continuous with the choroid, in the front part of the globe of the eye, is a thin, circular curtain, which occasions the brown, blue, or gray color of the eye in different individuals. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers The middle or vascular coat of the eye consists of the choroid, the ciliary processes and the iris. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z On the internal surface of the sclerotic is a vascular membrane called the choroid. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z This fluid is produced by filtering blood at the choroid plexuses in the four ventricles of the brain. Anatomy and Physiology 2013-06-19T00:00:00Z Its apex, where the two choroid plexuses blend with each other, lies just behind the anterior pillars of the fornix. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" The hinder surface of the iris, except in albinos, has a layer of dark coloring matter resembling that of the choroid. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Secondary cataract is due to abnormalities in the nutrient matter supplied to the lens owing to disease of the ciliary body, choroid or retina. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z But it may be found possible to stimulate by drugs the restorative action of the choroid, and thus by gaining increased "definition," improve weak sight. The Galaxy, April, 1877 Vol. XXIII.—April, 1877.—No. 4. They are also found in the choroid plexus of the brain and many endocrine structures, including the hypothalamus, pituitary, pineal, and thyroid glands. Anatomy and Physiology 2013-06-19T00:00:00Z The choroid plexuses contain the small choroidal arteries; and the blood from these is returned by small veins, which join to form the veins of Galen. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" These facts confirm the general impression that the color of the negro's skin is nearly allied to the "melanin," or black pigment of the choroid coat in the eye. The Galaxy, June 1877 Vol. XXIII.—June, 1877.—No. 6. The retina is subject to inflammation, to detachment from the choroid, to haemorrhages from the blood-vessels and to tumour. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z The source of the color was found to be the inner surface of the choroid upon which the retina lies. The Galaxy, April, 1877 Vol. XXIII.—April, 1877.—No. 4. The retina is a thin coat, lying inside the choroid at the back of the eyeball, and having the form of a hollow hemisphere. Psychology A Study Of Mental Life The choroid membrane is composed of three layers. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The choroid coat will be recognized as the black layer lying subjacent to the sclerotic. Special Report on Diseases of Cattle The Vitreous Humour.—The vitreous humour loses its transparency owing to exudation from the inflamed ciliary body or choroid. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z If a portion of the retina is disengaged from the choroid and raised up, it bleaches, though the remainder, still attached portion, retains its color. The Galaxy, April, 1877 Vol. XXIII.—April, 1877.—No. 4. Among other injuries resulting from contusion of the eye may be mentioned hæmorrhage into the vitreous, rupture of the choroid, and detachment of the retina. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. What is the color of the external surface of the choroid coat? A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The retina will be recognized as a delicate, glassy layer, lining the greater part of the choroid. Special Report on Diseases of Cattle The Retina.—Choroidal inflammations are generally patchy, various foci of inflammation being scattered over the choroid. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z If the raised flap is carefully replaced upon the choroid, it regains its purple hue. The Galaxy, April, 1877 Vol. XXIII.—April, 1877.—No. 4. These circumstances, in my opinion, render it certain, that the retina, and not the choroid coat, is the organ of vision. Popular Lectures on Zoonomia Or The Laws of Animal Life, in Health and Disease Their external border is continuous with the internal layer of the choroid coat. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The choroid coat is a bell-shaped, dark membrane which lines the sclerotic. Special Report on Diseases of Cattle The choroid coat, which constitutes the second investing membrane of the eye, is of a dark brown color upon its outer surface, and of a deep black within. Popular Education For the use of Parents and Teachers, and for Young Persons of Both Sexes This restoration is believed to be a function of the living choroid, and probably of the retinal epithelium, though it is independent of the black pigment which this epithelium contains. The Galaxy, April, 1877 Vol. XXIII.—April, 1877.—No. 4. From this he concludes, that the defect of vision is owing to the want of the choroid coat, and, consequently, that this coat is the proper organ of vision. Popular Lectures on Zoonomia Or The Laws of Animal Life, in Health and Disease The choroid coat seems to be chiefly composed of a tissue of nerves and minute blood-vessels; the latter give nourishment to the different parts of the eye. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The ciliary processes form a fringe around the slightly inverted rim of the choroid. Special Report on Diseases of Cattle There are three coats, called the sclerotic, the choroid, and the retina; and three humors, called the aqueous, the crystalline, and the vitreous. Popular Education For the use of Parents and Teachers, and for Young Persons of Both Sexes It is unnecessary to consider the small parts above the thalami, the choroid plexus of blood vessels, the fornix or strip of nerve membrane, and the septum lucidum or delicate fibres under the corpus callosum. Buchanan's Journal of Man, May 1887 Volume 1, Number 4 Whence it is evident that vision exists where the choroid coat is not present, and consequently that the choroid coat is not the organ of vision. Popular Lectures on Zoonomia Or The Laws of Animal Life, in Health and Disease Of what is the choroid coat chiefly composed? A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) It is formed by the expansion of the optic nerve on the inner surface of the choroid, and, like that coat, it is bell-shaped. Special Report on Diseases of Cattle Those in which the eye is known to be unhealthy and liable to inflammations, specially of iris, retina, or choroid. A Manual of the Operations of Surgery For the Use of Senior Students, House Surgeons, and Junior Practitioners Zirm believes the venous plexus of the choroid is an essential part of the mechanism for the regulation of intra-ocular tension, the necessary vaso-motor control depending on nerve centers situated in the iris. Glaucoma A Symposium Presented at a Meeting of the Chicago Ophthalmological Society, November 17, 1913 They are found in one or both of the lateral ventricles, enveloped in the folds of the choroid plexus. Special Report on Diseases of the Horse Take out both the lens and the iris and the choroid coat of the eye will reproduce both. Preventable Diseases Effusion into the lateral ventricles of a light yellow; the choroid plexuses thickened, and of a dark venous appearance; substance of brain firm and apparently healthy. An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners There is atrophy in spots of the capillary layer of the choroid, and the larger vessels of the deeper layer are exposed between the interstices of the pigment masses. 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 A recurrence involving adjoining choroid occurred fourteen months ago. Glaucoma A Symposium Presented at a Meeting of the Chicago Ophthalmological Society, November 17, 1913 This is more marked in proportion as the iris is inflamed, and less so as the inflammation is confined to the choroid. Special Report on Diseases of the Horse Sclerotic, retina, choroid, vitreous humour, lens, aqueous humour, all are present. On the Genesis of Species The choroid coat lies immediately beneath the sclerotic coat at all places except a small margin toward the front of the eyeball. Physiology and Hygiene for Secondary Schools In the Sympathizing Eye.—There is an inflammation involving the choroid, ciliary body and iris. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada The pigment deposit in the choroid is excessive and gives, as a background to the retina, a beautiful silvery sheen when examined with the ophthalmoscope. Scientific American Supplement No. 822, October 3, 1891 In severe inflammations pus may form in the choroid or iris, and escaping into the cavity of the aqueous humor show as a yellowish-white stratum below. Special Report on Diseases of the Horse In these cases the lesions have consisted of detachment of the retina, optic atrophy, cataract, hemorrhages into the retina, and rupture of the choroid, paralysis of the oculomotor muscles, and paralysis of the optic nerve. Anomalies and Curiosities of Medicine The iris is a continuation of the choroid coat across the front of the eyeball. Physiology and Hygiene for Secondary Schools The choroid is a thin highly vascular membrane of a dark brown or chocolate color and is pierced behind by the optic nerve and in this situation is firmly adherent to the sclerotic. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada These coats are the sclerotic, the choroid, and the retina. A Practical Physiology The spinal fluid itself is a secretion of another gland at the base of the brain, the choroid. The Glands Regulating Personality The inner membrane becomes the choroid or vascular coat, and in front the ciliary corona and iris. The Evolution of Man — Volume 2 The Middle Coat consists of three connected portions—the choroid coat, the ciliary processes, and the iris. Physiology and Hygiene for Secondary Schools The ciliary body comprises three muscles for its make-up and connects the choroid to the circumference of the iris. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada Lining the inner surface of the sclerotic is the second coat, the choroid. A Practical Physiology What we call 'seeing' is far more the result of an interplay between the retina carrying the nerves, and the choroid carrying the blood-vessels. Man or Matter It lines nearly the whole of the inner surface of the posterior chamber, resting on the inner surface of the choroid. A Practical Physiology Near where the sclerotic coat joins the cornea, the choroid coat separates from the outer wall and, by folding, forms many slight projections into the interior space. Physiology and Hygiene for Secondary Schools The ciliary body connects the choroid to the circumference of the iris. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada As the choroid approaches the front part of the eyeball, its parts become folded upon themselves into a series of ridges, called ciliary processes. A Practical Physiology For instance, a layer near the choroid is made up of nerve cells arranged in innumerable cylinders called "rods and cones," and packed together not unlike the seeds of a sunflower. A Practical Physiology It also serves to hold the choroid and the retina in position, and to maintain the proper relations of the inner structures of the eye. A Practical Physiology It rests upon the choroid coat and spreads over about two thirds of the back surface of the eyeball. Physiology and Hygiene for Secondary Schools The choroid is the vascular and dark coat covering the posterior five-sixths of the globe. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada This pigment layer and that of the choroid and retina absorb the light entering the eye, so that little is reflected. A Practical Physiology All around the edge, where the cornea, sclerotic, and choroid meet, is a ring of involuntary muscular fibers, forming the ciliary muscle. A Practical Physiology The pigmented layer of the choroid coat represents this blackened lining. A Practical Physiology Look at an object--e.g., a candle-flame--and observe the inverted image of the flame shining through the retina and choroid, and notice how the image moves when the candle is moved. A Practical Physiology |
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