blastopore

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blastopore

 [blas´to-por]
the opening of the archenteron to the exterior of the embryo at the gastrula stage.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

blas·to·pore

(blas'tō-pōr),
The opening into the archenteron formed by invagination of the blastula to form a gastrula.
Synonym(s): protostoma, protostome
[blasto- + G. poros, opening]
Farlex Partner Medical Dictionary © Farlex 2012

blastopore

(blăs′tə-pôr′)
n. Embryology
The opening of the archenteron.

blas′to·por′al, blas′to·por′ic adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

blastopore

The opening of the archenteron, the primitive gut, to the outside, formed by invagination of cells on the embryo’s surface which form the mesoderm and endoderm during during gastrulation.

In some animals, the blastopore becomes the anus; in others, it closes and the anus opens at or near the same site; in some animals (e.g., chickens), invagination gives rise to a virtual blastopore at the primitive streak.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

blas·to·pore

(blas'tō-pōr)
The opening into the archenteron formed by invagination of the blastula (e.g., amphibians) to form a gastrula.
[blasto- + G. poros, opening]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

blastopore

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