File:Stage6 bf03.jpg

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Human Embryo Carnegie Stage 6

Carnegie Collection Embryo No.7801

This is a section through the human stage 6 conceptus showing development of the bilaminar (two layer) embryo and the early extra-embryonic coeloms (spaces).

Bilaminar embryo

epiblast - thickened columnar epithelium.
hypoblast -squamous epithelium.

Extra-embryonic coelom

amnion - lying above the epiblast later.
chorion - lying outside the primitive yolk sac.

Carnegie stage 6: Embryo No.7801 - embryonic disc | Labeled | Embryo No.7801 - primitive streak

Facts

about 13 - 13.5 days
Embryonic disc - 0.04 x 0.22 x 0.253 mm
Chorion - 2.6 x 1.9 x 1.4 mm
Chorionic cavity - 1.3 x 1.1 x 0.8 mm

Historic Papers: 1909 | 1925 | 1937

Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline

Reference

Image modified from

Heuser CH. Rock J. and Hertig AT. Two human embryos showing early stages of the definitive yolk sac. (1945) Contrib. Embryol., Carnegie Inst. Wash. Publ. 557, 31: 85-99.

Cite this page: Hill, M.A. (2023, December 2) Embryology Stage6 bf03.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage6_bf03.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	07:26, 25 October 2011		646 × 800 (65 KB)	S8600021 (talk \| contribs)	==Human Embryo Carnegie Stage 6== Carnegie Collection Embryo No.7801 * about 13 - 13.5 days * Embryonic disc - 0.04 x 0.22 x 0.253 mm * Chorion - 2.6 x 1.9 x 1.4 mm * Chorionic cavity - 1.3 x 1.1 x 0.8 mm {{Carnegie Embryo Stage6}} {{Template:Carnegie_

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