How To Use Entoderm In A Sentence
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The outline of the enteron is here almost a vertical slit, and the lining entoderm consists, in its dorsal and lateral regions, of a single layer of columnar epithelium, while in its ventral region, where it adjoins the liver trabeculae, it is made up of several layers of cuboidal or irregular cells.
Development of the Digestive Canal of the American Alligator
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A cell mass is first produced, and the cells in this differentiate into three layers called ectoderm, entoderm and mesoderm, from which the external and internal surfaces and the enclosed tissues respectively develop, and the different organs are produced by growth of the cells of certain areas of these layers.
Disease and Its Causes
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The lateral mesoderm splits into two layers, an outer or somatic, which becomes applied to the inner surface of the ectoderm, and with it forms the somatopleure; and an inner or splanchnic, which adheres to the entoderm, and with it forms the splanchnopleure (Fig. 16).
I. Embryology. 5. Segmentation of the Fertilized Ovum
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The inner layer we call the entoderm, the outer the ectoderm; and the "primitive mouth" is known as the blastopore.
The World's Greatest Books — Volume 15 — Science
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The terms ectoderm and entoderm were introduced by Allman [330] in 1853 for the two cell-layers in the Hydrozoa.
Form and Function A Contribution to the History of Animal Morphology
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A sagittal section of approximately this stage, shown in figure 1A, represents the foregut, _fg_, as a shallow enclosure of the anterior region of the entoderm, while the wide blastopore, _blp_, connects the region of the hindgut with the exterior.
Development of the Digestive Canal of the American Alligator
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The nuclei in the dorsal and lateral regions of the entoderm are arranged in a very definite layer at the basal ends of the cells, though an occasional nucleus may be seen near the center of the layer.
Development of the Digestive Canal of the American Alligator
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Finally, the entoderm first forms a broad open gutter, which is shaped like a trough.
Hans Spemann - Nobel Lecture
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B longitudinal section through the axis, g primitive-gut cavity, a primitive mouth-aperture, i inner cell-layer (entoderm, endoblast, gut-layer), e external cell-layer (outer germinal layer, ectoderm, ectoblast, or skin-layer).
The Evolution of Man — Volume 1
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The foregut is here more inclosed, and the notochord, _nt_, having separated from the entoderm, _en_, is seen as a distinct layer of cells extending from the foregut to the blastopore.
Development of the Digestive Canal of the American Alligator
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The terms ectoderm and entoderm were introduced by Allman [330] in 1853 for the two cell-layers in the Hydrozoa.
Form and Function A Contribution to the History of Animal Morphology
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But in all other animals the ovum first grows into two primary layers, the outer or animal layer (the ectoderm, epiblast, or ectoblast), and the inner or vegetal layer (the entoderm, hypoblast, or endoblast); and from these the tissues and organs are formed.
The Evolution of Man — Volume 1
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The foregut is here more inclosed, and the notochord, _nt_, having separated from the entoderm, _en_, is seen as a distinct layer of cells extending from the foregut to the blastopore.
Development of the Digestive Canal of the American Alligator
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These three layers are called ectoderm, mesoderm, and entoderm from outside inwards respectively.
Physiology or Medicine 1935 - Presentation Speech
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The lateral mesoderm splits into two layers, an outer or somatic, which becomes applied to the inner surface of the ectoderm, and with it forms the somatopleure; and an inner or splanchnic, which adheres to the entoderm, and with it forms the splanchnopleure (Fig. 16).
I. Embryology. 5. Segmentation of the Fertilized Ovum
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Beneath the primordial brain an invagination of the ectoderm against the entoderm is formed, later to become the mouth.
Physiology or Medicine 1935 - Presentation Speech
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The entoderm, which has the appearance of being thickened because of the fact that the notochord has not yet completely separated from it, is continuous, through the blastopore, with the ectoderm.
Development of the Digestive Canal of the American Alligator
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Then along the line of invagination, i.e. the primitive orifice or blastopore, runs the outer layer of cells or ectoderm into the two invaginated layers, the mesoderm (originating from the marginal zone), and entoderm
Hans Spemann - Nobel Lecture
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Entoderm: the innermost germ layer of the embryo, from which are derived the epithelium of the alimentary canal and accessory structures: = endoderm and hypoblast.
Explanation of Terms Used in Entomology
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They live parasitically in the body-cavity of echinoderms (Ophiura) and vermalia; they are distinguished by the fact that their primitive gut-cavity is not empty, but filled with entodermic cells, from which the sexual cells are developed.
The Evolution of Man — Volume 2
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But in all other animals the ovum first grows into two primary layers, the outer or animal layer (the ectoderm, epiblast, or ectoblast), and the inner or vegetal layer (the entoderm, hypoblast, or endoblast); and from these the tissues and organs are formed.
The Evolution of Man — Volume 1
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The mesoderm that extends ventrad from the mesentery, on each side of the entoderm just described, consists of a thick layer of compactly arranged cells.
Development of the Digestive Canal of the American Alligator
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But in the monotremes the formation of the cenogenetic entoderm does not precede the invagination; hence in this case the construction of the germinal layers is less modified than in the other amniota.
The Evolution of Man — Volume 1
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The outer layer, from which come the external skin and the muscles, was then called by Allman (1853) the "ectoderm" (outer layer, or skin); the inner layer, which forms the alimentary and reproductory organs, was called the "entoderm" (= inner layer).
The Evolution of Man — Volume 1
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This invagination is termed the proctodeum, and it meets with the entoderm of the hind-gut and forms with it the anal membrane.
XI. Splanchnology. 2. The Digestive Apparatus
