Carnegie stage 3: Difference between revisions

Revision as of 18:49, 25 September 2011

Human Blastocyst "hatching" from zona pellucida (classified as Carnegie stage 3).

Blastocyst is too the right of image and zona pellucida is shown to the left of the image.

Note:

small opening in the zona pellucida through which the blastocyst is hatching
flattened trophoblast cells forming the outer cell layer of the blastocyst
inner cell mass shown in the centre of the image and on the left-hand wall of the blastocyst
blastocoel forming a large fluid-filled space within the blastocyst

Facts: Week 1, 4 - 5 days, size 0.1-0.2 mm

Features: zona pellucida, trophoblast shell, inner cell mass, blastoceol

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 26) Embryology Carnegie stage 3. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_3

@@ Line 20: / Line 20: @@
 '''Features:''' [[zona pellucida]], [[T#trophoblast shell|trophoblast shell]], [[I#inner cell mass|inner cell mass]], [[B#blastoceol|blastoceol]]
+==Carnegie Collection==
+[[File:Stage3 bf01.jpg|400px]] [[File:Stage3 bf02.jpg|400px]]