archenteron

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archenteron

 [ahrk-en´ter-on]
the central cavity that is the provisional gut in the gastrula; the primordial digestive cavity of the embryo.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

primordial gut

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.
Farlex Partner Medical Dictionary © Farlex 2012

archenteron

(är-kĕn′tə-rŏn′, -tər-ən)
n.
The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity.

ar′chen·ter′ic (är′kĕn-tĕr′ĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

archenteron

The embryonic digestive tract.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Archenteronclick for a larger image
Fig. 44 Archenteron . Formation of the archenteron in an amphibian embryo.

archenteron

that 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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005