Carnegie stage 5: Difference between revisions

Revision as of 08:08, 1 June 2011

Facts: Week 1, size 0.1-0.2 mm

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

Animation 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

File:Chorion 001 icon.jpg</wikiflv>

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 19) Embryology Carnegie stage 5. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_5

@@ Line 7: / Line 7: @@
 {|
 |
-Animation 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.
+Animation shows the events following implantation and focuses on changes in the the spaces surrounding the embryonic disc, the extraembryonic coelom.
-'''blue''' - epiblast layer
+The blastoceol cavity is converted into two separate spaces: the yolk sac and the chorionic cavity.
-'''yellow''' - hypoblast layer
+The third space lies above the epiblast, the amniotic cavity.
-'''red cells''' - extraembryonic mesoderm layer
+:'''blue''' - epiblast layer
-'''green''' - trophoblast layer
+:'''yellow''' - hypoblast layer
-'''red spaces''' - blood-filled spaces, maternal lacunae
+:'''red cells''' - extraembryonic mesoderm layer
-'''white cells''' - (left) endometrial gland (right) endometrial epithelium
+:'''green''' - trophoblast layer
+:'''red spaces''' - blood-filled spaces, maternal lacunae
+:'''white cells''' - (left) endometrial gland (right) endometrial epithelium
-:[[Media:Chorion_001.mov|Quicktime version]]
 | <wikiflv width="214" height="220" autoplay="true" position="left">Chorion 001.flv|File:Chorion 001 icon.jpg</wikiflv>
+:[[Media:Chorion_001.mov|Quicktime movie]]
 |}