Primitive pit

Primitive pit
	File:Gray14.png Surface view of embryo of Hylobates concolor. The amnion has been opened to expose the embryonic disk. (Primitive pit not labeled, but region is visible.)
Identifiers
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TH	Template:Str mid/core.html {{#property:P1694}}
TE	{{#property:P1693}}
FMA	Template:FMA
	Anatomical terminology

The primitive pit is a depression in the center of the primitive knot, connecting to the notochord. It consists of part of the primitive streak.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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Primitive pit
File:Gray14.png Surface view of embryo of Hylobates concolor. The amnion has been opened to expose the embryonic disk. (Primitive pit not labeled, but region is visible.)
Identifiers
TA	Lua error in Module:Wikidata at line 277: attempt to index field 'wikibase' (a nil value).
TH	Template:Str mid/core .html {{#property:P1694}}
TE	{{#property:P1693}}
FMA	Template:FMA
Anatomical terminology