archenteron /arch·en·ter·on/ (ahrk-en´ter-on) the primordial digestive cavity of those embryonic forms whose blastula becomes a gastrula by invagination.
archenteron
ar·chen·ter·on (är-k n t -r n , -tr-n)n. See gastrocele. |
archenteron
[arken′təron] pl. archentera
Etymology: Gk, arche, beginning, enteron, intestine
the primitive digestive cavity formed by invagination into the gastrula, which is lined with entoderm during the embryonic development of many animals. It corresponds to the tubular cavity in the vertebrates that connects the amniotic cavity with the yolk sac. Also called archigaster, coelenteron, gastrocoele, primitive gut. See also gastrula. archenteric, adj.
archenteron
the central cavity that is the provisional gut in the gastrula; the primitive digestive cavity of the embryo.
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