| 单词 | mesoblast |
| 例句 | The micromeres give rise to the ectoderm; each of the sixteen macromeres, after budding off a small mesoblast cell, passes on as endoderm. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Hertwig says that all the cells of the epiblast, hypoblast, mesoblast, and of the later derivatives of these primary layers, receive identical portions of germplasm by means of doubling nuclear divisions. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z The segmentation is of the mesoblast to begin with, and appears later behind the mouth, the part anterior to this becoming the prostomium of the adult. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" We have further to note that in the embryos of Metazoa at all advanced in organization, there arises between these two layers a third—the mesoblast. Essays: Scientific, Political, & Speculative, Vol. I 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. The optic cup, or its contained fluid, is one chemical compound; epithelium is another; mesoblast is a third. Science and Morals and Other Essays Mesoderm:= mesoblast: gives rise to muscular and circulatory systems. Explanation of Terms Used in Entomology The epithelium of the duodenum consists of four or five layers of compactly arranged cells, near the center of an oval mass of fairly dense mesoblast. Development of the Digestive Canal of the American Alligator And from the mesoblast originate the bones, the muscles, the heart and blood-vessels, and the lymphatics, together with such parts of various internal organs as are most remotely concerned with the outer world. Essays: Scientific, Political, & Speculative, Vol. I Larger vessels and the heart are burrowed, as it were, out of masses of mesoblast cells. Text Book of Biology, Part 1: Vertebrata They distinguished in the middle layer two quite distinct elements, the mesoblast proper, formed by the evagination of the walls of the archenteron, and the mesenchyme, formed by free cells budded off from the germ-layers. Form and Function A Contribution to the History of Animal Morphology What the mesoblast of the Death's Head Moth may be, does not matter a rap in this story. The Stolen Bacillus and Other Incidents These are much thicker than in the oesophagus; in the mesoblast which 18 forms the greater part of their thickness, muscle fibers are beginning to differentiate. Development of the Digestive Canal of the American Alligator What the mesoblast of the Death's Head Moth may be does not matter a rap in this story. The Country of the Blind, and Other Stories We naturally assume, from what we have learnt, that the next stages will be the formation of a hollow blastosphere, invagination, a gastrula forming mesoblast by hollow outgrowths from the archenteron, and so on. Text Book of Biology, Part 1: Vertebrata This process goes on till all the cells are so filled by the mesoblast, with its myriad brood of cells, that the outer sac or ectoblast becomes a mere halo around it. The Atlantic Monthly, Volume 10, No. 61, November, 1862 In the gastrula stage, the segmentation cavity in which the mesoblast is formed lies between the entoblast and ectoblast. The Gutenberg Webster's Unabridged Dictionary Section S The surrounding mesoblast is differentiated into muscle fibers, figure 7J, ml, which form a fairly distinct layer; inside of this layer is a tall columnar epithelium, ep�, which is thrown into prominent folds. Development of the Digestive Canal of the American Alligator In all the higher animals a layer of cells makes its appearance between the hypoblast and the epiblast, and is termed the mesoblast. Darwiniana : Essays — Volume 02 Epiblast is indicated by a line of dashes, mesoblast by dots, and hypoblast, dark or black. Text Book of Biology, Part 1: Vertebrata They increase with great rapidity, the inner sac or mesoblast becoming sometimes so crowded with them, that its shape is affected by the protrusion of their angles. The Atlantic Monthly, Volume 10, No. 61, November, 1862 Each bronchus, like the trachea, is lined with an epithelium of three or four layers of cells; but the epithelium is surrounded by a thin layer of much condensed mesoblast. Development of the Digestive Canal of the American Alligator A thin layer of mesoblast, probably the submucosa, sl, lies beneath the epithelium and projects up into the folds. Development of the Digestive Canal of the American Alligator In a lateral projection of this mass of mesoblast 13 lies a small, circular opening, the bile duct, bd. Development of the Digestive Canal of the American Alligator Dorsal to this, in 6, comes a space lined by somatic mesoblast, and continuous with p.p., the pleuro-peritoneal cavity, or body cavity of the embryo. Text Book of Biology, Part 1: Vertebrata The mass of the body is thus evidently made of mesoblast. Text Book of Biology, Part 1: Vertebrata The enamel is derived from the outer layer of the embryonic dog-fish, the epiblast, which also gives rise to the epidermis; while the dentine and bony base arise in the underlying mesoblast, the dermis. Text Book of Biology, Part 1: Vertebrata The descending loops of the duodenum are cut in such a way that the surrounding mesoblast forms a continuous mass of tissue. Development of the Digestive Canal of the American Alligator The tadpole has, at first, a straight tubular heart, burrowed out in somatic mesoblast, and produced forward into a truncus arteriosus. Text Book of Biology, Part 1: Vertebrata |
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