American Heritage® Dictionary of the English Language, Fourth Edition
- n. The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity.
Century Dictionary and Cyclopedia
- n. The enteron (which see) in its original or primitive undifferentiated state: opposed to metenteron.
GNU Webster's 1913
- n. (Biol.) The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See
- n. central cavity of the gastrula; becomes the intestinal or digestive cavity
- arch- from Latin archi- from Ancient Greek ἀρχι- (archi-) + enteron from Ancient Greek ἔντερον (enteron, "gut"). (Wiktionary)
“It becomes even more obvious when a piece of the roof of the archenteron is planted in the blastocoele.”
“Professor E. Ray-Lankester suggested three years afterwards (1875) the name archenteron for the primitive gut, and blastoporus for the primitive mouth.) (FIGURE.1.36.”
“Thus a portion of the upper marginal zone of the blastula or early gastrula, or else a piece of the roof of the archenteron of the mature gastrula was planted in the blastocoele of a young gastrula and so brought beneath the ectoderm from the beginning; it was demonstrated that these portions were able to induce neural plate.”
“Kowalevsky, in 1871, showed that the body-cavity of Sagitta was formed by a division of the archenteron into three parallel cavities, and in 1874 demonstrated the same fact for the Brachiopoda.”
“With the notochord he homologised the supporting rod in the proboscis of _Balanoglossus_, which like the notochord arises from the dorsal wall of the archenteron, and has a vacuolated structure.”
“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.”
“There exist, doubtless, homologies of great atavistic importance -- I consider as such, for example, the formation of the cavity of Rusconi [the archenteron] in Ascidians and lower”
“They form the walls of a new cavity, the enterocoel, which is to be regarded as a nipped-off diverticulum of the archenteron.”
“Its relation to the Coelom theory lies in the fact that Sedgwick regarded the segmentation of the body as moulded upon the segmentation of the mesoblast, which in its turn, as Kowalevsky and Hatschek had shown, was a consequence of its mode of origin as a series of pouches of the archenteron.”
“Gastræa; they form the limits of the organism towards the exterior and towards the archenteron.”
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