Carnegie stage 3: Difference between revisions
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==Introduction== | ==Introduction== | ||
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| [[Image:CSt3.jpg]] | | [[Image:CSt3.jpg]] | ||
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Blastocyst is too the right of image and zona pellucida is shown to the left of the image. | Blastocyst is too the right of image and zona pellucida is shown to the left of the image. | ||
* 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. | |||
:'''Links:''' [[Week 1]] | [[Blastocyst]] | [[Lecture - Week 1 and 2 Development|Lecture]] | [[2011_Lab_2|Practical]] [[Carnegie_stage_4|Stage 4]] | |||
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[[File:Human embryo day 5 label2.jpg]] [[File:Human embryo day 5.jpg|Stage 3 Day 5]] | |||
[[File:Human embryo day 5 label.jpg]] | |||
* Human blastocyst (day 5) still within zone pellucida. | |||
'''Facts:''' Week 1, 4 - 5 days, size 0.1-0.2 mm | '''Facts:''' Week 1, 4 - 5 days, size 0.1-0.2 mm |
Revision as of 05:59, 25 October 2011
Introduction
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.
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- Human blastocyst (day 5) still within zone pellucida.
Facts: Week 1, 4 - 5 days, size 0.1-0.2 mm
Features: zona pellucida, trophoblast shell, inner cell mass, blastoceol
- Links: Lecture | Practical | Implantation | Week 1
Carnegie Collection
58 cell blastocyst (day 4) | 107 cell blastocyst (day 4.5) |
- 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
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G