Carnegie stage 2: Difference between revisions
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This early mitosis is a unique embryonic cell cycle (M, S, M phases) compared to adult (M, G<sub>1</sub>, S, G<sub>2</sub>, M phase). With virtually no G<sub>1</sub> or G<sub>2</sub> phases this results in a reduction in cytoplasmic volume of each daughter cell with each cell division. | This early mitosis is a unique embryonic cell cycle (M, S, M phases) compared to adult (M, G<sub>1</sub>, S, G<sub>2</sub>, M phase). With virtually no G<sub>1</sub> or G<sub>2</sub> phases this results in a reduction in cytoplasmic volume of each daughter cell with each cell division. | ||
===Summary=== | |||
* Week 1, 2 - 3 days, size 0.1 - 0.2 mm | |||
* [[Z#zona pellucida|zona pellucida]], [[B#blastomeres|blastomeres]] | |||
See also [[#Events|Events]] | |||
'''Links:''' [[Week 1]] | [[Blastocyst]] | [[Cell Division - Mitosis|Mitosis]] | [[Lecture - Week 1 and 2 Development|Lecture]] | [[BGDA_Practical_-_Fertilization_to_Implantation|Medicine Practical]] | [[2011_Lab_2|Science Practical]] | [[Carnegie_stage_3|Stage 3]] | '''Links:''' [[Week 1]] | [[Blastocyst]] | [[Cell Division - Mitosis|Mitosis]] | [[Lecture - Week 1 and 2 Development|Lecture]] | [[BGDA_Practical_-_Fertilization_to_Implantation|Medicine Practical]] | [[2011_Lab_2|Science Practical]] | [[Carnegie_stage_3|Stage 3]] | ||
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Two cell blastomere (1-2 days) | Two cell blastomere (1-2 days) | ||
==Events== | |||
* <ref name=“PMID”><pubmed></pubmed></ref> | |||
===References=== | |||
<references/> | |||
==Additional Images== | |||
{{Carnegie_stages}} | {{Carnegie_stages}} |
Revision as of 10:21, 4 April 2016
Embryology - 8 May 2024 Expand to Translate |
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Introduction
First cell mitotic divisions of the zygote forming initially 2 blastomeres that continue to divide to form the morula, a "berry", a solid mass of cells.
This early mitosis is a unique embryonic cell cycle (M, S, M phases) compared to adult (M, G1, S, G2, M phase). With virtually no G1 or G2 phases this results in a reduction in cytoplasmic volume of each daughter cell with each cell division. Summary
Links: Week 1 | Blastocyst | Mitosis | Lecture | Medicine Practical | Science Practical | Stage 3 |
Week: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Carnegie stage: | 1 2 3 4 | 5 6 | 7 8 9 | 10 11 12 13 | 14 15 | 16 17 | 18 19 | 20 21 22 23 |
- 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
Human Embryo (day 2) | Human Embryo (day 3) |
See also Human oocyte to blastocyst
Carnegie Collection
Two cell blastomere (1-2 days)
Events
References
- ↑ <pubmed></pubmed>
Additional Images
- 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, May 8) Embryology Carnegie stage 2. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_2
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G