Carnegie stage 1: Difference between revisions
Line 39: | Line 39: | ||
File:Human pronuclear stage EM02.jpg|Human pronuclei EM PMID 6008199 | File:Human pronuclear stage EM02.jpg|Human pronuclei EM PMID 6008199 | ||
File:Human pronuclear stage EM022.jpg|Human pronuclei EM PMID 6008199 | File:Human pronuclear stage EM022.jpg|Human pronuclei EM PMID 6008199 | ||
File:Human pronuclear stage EM03.jpg|Human pronuclei | |||
File:Human pronuclear stage EM04.jpg|Human pronuclei | |||
File:Human pronuclear stage EM05.jpg|Human pronuclei | |||
File:Human pronuclear stage EM06.jpg|Human pronuclei | |||
File:Human pronuclear stage EM07.jpg|Human pronuclei | |||
File:Human pronuclear stage EM08.jpg|Human pronuclei | |||
File:Human pronuclear stage EM09.jpg|Human pronuclei | |||
File:Human pronuclear stage EM10.jpg|Human pronuclei | |||
File:Human pronuclear stage EM11.jpg|Human pronuclei | |||
File:Human pronuclear stage EM12.jpg|Human pronuclei | |||
File:Human pronuclear stage EM13.jpg|Human pronuclei | |||
File:Human pronuclear stage EM14.jpg|Human pronuclei | |||
File:Human pronuclear stage EM15.jpg|Human pronuclei | |||
File:Human pronuclear stage EM16.jpg|Human pronuclei | |||
File:Human pronuclear stage EM17.jpg|Human pronuclei | |||
File:Human pronuclear stage EM18.jpg|Human pronuclei | |||
File:Human pronuclear stage EM19.jpg|Human pronuclei | |||
File:Human pronuclear stage EM20.jpg|Human pronuclei | |||
File:Human pronuclear stage EM21.jpg|Human pronuclei | |||
File:Human pronuclear stage EM22.jpg|Spermatozoon Components | File:Human pronuclear stage EM22.jpg|Spermatozoon Components | ||
File:Human pronuclear stage EM25.jpg|Golgi complex | File:Human pronuclear stage EM25.jpg|Golgi complex |
Revision as of 01:26, 24 February 2012
Introduction
Human early zygote showing male and female pronuclei |
The early human zygote where the male and female pronuclei (centre of image) have not yet combined to form the single zygote nucleus. These pronuclei are the nuclei from the spermatozoa (sperm) and oocyte (egg) and contain all the nuclear genetic material (chromosomes, DNA, genes). Two of the egg's polar bodies (right, 3 o'clock position of image) are shown at the edge of the egg cytoplasm. These polar bodies contain the excess DNA from the meiotic divisions of the egg. The zona pellucida (edge of image) forms a specialised thick extracellular matrix layer around both the egg and the developing conceptus for the first week. Mitochondria in the cytoplasm contain additional genes and in humans these mitochondrial genes are entirely derived from the oocyte. Facts: Week 1, size 0.1-0.15 mm Features: zygote, fertilized oocyte, pronuclei, polar bodies, zona pellucida
|
- 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
Carnegie stage 1
Electron Micrographs
- Human pronuclear stage EM03.jpg
Human pronuclei
- Human pronuclear stage EM04.jpg
Human pronuclei
- Human pronuclear stage EM05.jpg
Human pronuclei
- Human pronuclear stage EM14.jpg
Human pronuclei
- Human pronuclear stage EM15.jpg
Human pronuclei
- Human pronuclear stage EM16.jpg
Human pronuclei
Historic Images
References
- 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, March 28) Embryology Carnegie stage 1. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_1
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G