Carnegie stage 3: Difference between revisions
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==Introduction== | ==Introduction== | ||
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| [[File:Human embryo day 5 | | [[File:Human embryo day 5 label2.jpg]] | ||
Human blastocyst (day 5) still within zone pellucida. | Human blastocyst (day 5) still within zone pellucida. | ||
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:'''Links:''' [[Week 1]] | [[Blastocyst]] | [[Lecture - Week 1 and 2 Development|Lecture]] | [[2011_Lab_2|Practical]] [[Carnegie_stage_4|Stage 4]] | :'''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 | | [[File:Human embryo day 5 label.jpg]] | ||
| [[File:Human embryo day 5.jpg|Stage 3 Day 5]] | |||
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Revision as of 06:08, 25 October 2011
Introduction
Human blastocyst (day 5) still within zone pellucida. |
The free-floating blastocyst has reached the uterine body still enclosed in the zone pellucida and "hatches" from this surrounding extracellular matrix. It is only after hatching that the blastocyst can attach to and then implant into the uterine wall.
Facts: Week 1, 4 - 5 days, size 0.1-0.2 mm Features: zona pellucida, trophoblast shell, inner cell mass, blastoceol
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Blastocyst Hatching
Blastocyst Development
Early development day 3 to 6 |
Blastocyst Contractions
(day 5 to 6) |
Blastocyst Hatching
(day 5 to 6) |
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