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the central cavity that is the provisional gut in the gastrula; the primordial digestive cavity of the embryo.
a flat sheet of intraembryonic endoderm that will change into a tubular gut due to the folding of embryonic body-head, tail, and lateral body folds.
archenteron/arch·en·ter·on/ (ahrk-en´ter-on) the primordial digestive cavity of those embryonic forms whose blastula becomes a gastrula by invagination.
The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity.
ar′chen·ter′ic (är′kĕn-tĕr′ĭk) adj.
[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.
archenteronThe embryonic digestive tract.
archenteronthat part of the developing embryo of animals (BLASTULA) formed by an invagination of MESODERM and ENDODERM cells into the blastocoel which ultimately forms the gut. The archenteron opens to the exterior via the blastopore.
the central cavity that is the provisional gut in the gastrula; the primitive digestive cavity of the embryo.