Carnegie stage 5: Difference between revisions

Revision as of 18:02, 23 September 2011

Facts: Week 1-2, size 0.1 - 0.2 mm

Features: implantation completed, inner cell mass, bilaminar embryo, trophoblast development

File:Chorion 001 icon.jpg</wikiflv>

Animation (left) shows the events following implantation and focuses on changes in the the spaces surrounding the embryonic disc, the extraembryonic coelom.

The blastoceol cavity is converted into two separate spaces: the yolk sac and the chorionic cavity.

The third space lies above the epiblast, the amniotic cavity.

blue - epiblast layer

yellow - hypoblast layer

red cells - extraembryonic mesoderm layer

green - trophoblast layer

red spaces - blood-filled spaces, maternal lacunae

white cells - (left) endometrial gland (right) endometrial epithelium

Quicktime movie

Stage 5b

Embryo No.8004
Embryo No.8004
Embryo No.8004

Stage 5c

Embryo No.7700
Embryo No.7700
Embryo No.7700
Embryo No.7700
Embryo No.7700
Embryo No.7700
Embryo No.7700
Embryo No.7700

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

Cite this page: Hill, M.A. (2024, April 24) Embryology Carnegie stage 5. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_5

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