blastopore

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blastopore

 [blas´to-por]
the opening of the archenteron to the exterior of the embryo at the gastrula stage.

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]

blastopore

/blas·to·pore/ (blas´to-por) the opening of the archenteron to the exterior of the embryo at the gastrula stage.

blastopore

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

blas′to·por′al, blas′to·por′ic adj.

blastopore

[blas′təpôr]
Etymology: Gk, blastos + poros, opening
(in embryology) the opening into the archenteron made by invagination of the blastula.

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.

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]

blastopore

the opening of the GASTRULA.

blastopore

the opening of the archenteron to the exterior of the embryo at the gastrula stage. Called also archistome, anus of Rusconi.