Carnegie stage 1: Difference between revisions

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{{Header}}
==Introduction==
==Introduction==
{|
{|
| [[File:Early_zygote_labelled.jpg]]
| width=310 valign=top|[[File:Early_zygote_labelled.jpg|300px]]
Human early zygote showing male and female pronuclei
Human early zygote showing male and female pronuclei
|
|
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Mitochondria in the cytoplasm contain additional genes and in humans these mitochondrial genes are entirely derived from the oocyte.
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
===Summary===
* Week 1, size 0.1 - 0.15 mm
* [[Z#zygote|zygote]], fertilized oocyte, [[P#pronucleus|pronuclei]], [[P#polar bodies|polar bodies]], [[Z#zona pellucida|zona pellucida]]


'''Features:''' [[Z#zygote|zygote]], fertilized oocyte, [[P#pronucleus|pronuclei]], [[P#polar bodies|polar bodies]], [[Z#zona pellucida|zona pellucida]]


See also [[#Events|Events]]
|}
<br>
{{Carnegie stage 1 links}}


:'''Links:''' [[Week 1]] | [[Zygote]] | [[Zona pellucida|Zona pellucida]] | [[Cell Division - Mitosis|Mitosis]] | [[Molecular_Development_-_Genetics|Genetics]] | [[Molecular_Development_-_Genetics#Human_Genome|Human Genome]] | [[Molecular_Development_-_Genetics#Mitochondrial_Genome|Mitochondrial Genome]] | [[Lecture - Week 1 and 2 Development|Lecture]] | [[BGDA_Practical_-_Fertilization_to_Implantation|Medicine Practical]] | [[2011_Lab_2|Science Practical]] | [[Carnegie_stage_2|Stage 2]]
{{Carnegie_stage_table_1}}
|}


{{Carnegie stages}}
{{Carnegie stages}}
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File:Human zygote two pronuclei 22.jpg|Human zygote two pronuclei (labelled) PMID 20579351
File:Human zygote two pronuclei 22.jpg|Human zygote two pronuclei (labelled) PMID 20579351
File:Human-oocyte_to_blastocyst.jpg|Human oocyte to blastocyst PMID 19924284
File:Human-oocyte_to_blastocyst.jpg|Human oocyte to blastocyst PMID 19924284
File:Human_fertilization_movie_1_frame_05.jpg|Human pronuclei
</gallery>
</gallery>


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</gallery>
</gallery>


==Historic Images==
==Movies==
{|
| valign="bottom"|{{Human fertilization movie 1}}
| valign="bottom"|{{Human fertilization movie 2}}
|}
 
==Other Species==
 
<gallery>
File:Mouse pronuclei 02.jpg|Mouse
File:Mouse_zygote_pronuclei_01.jpg|Mouse
</gallery>
 
==Events==
* <ref name=“PMID”><pubmed></pubmed></ref>
 
 
===References===
<references/>
 
{{Ref-Zamboni1966}}
 
==Additional Images==
 
===Historic Images===


<gallery>
<gallery>
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</gallery>
</gallery>


==References==


<references/>


{{Template:Carnegie_stages}}
{{Template:Footer}}


[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 1]] [[Category:Week 1]]
{{Carnegie_stages}}
 
 
{{Footer}}
 
[[Category:Zygote]][[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 1]] [[Category:Week 1]]

Revision as of 14:01, 9 August 2017

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Introduction

Early zygote labelled.jpg

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.

Summary


See also Events


Stage 1 Links: Zygote | Week 1 | Oocyte | Spermatozoa | Zona pellucida | Mitosis | Genetics | Human Genome | Mitochondrial Genome | Lecture | Medicine Practical | Science Practical | Stage 2
Historic Papers  
1919 Human Ovum | 1944 Ova Maturation | 1944 In vitro fertilization | 1949 Early Ova | 1966 Pronuclear Stage | 1986 human oocytes in vitro
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

Carnegie stage 1

Electron Micrographs

Movies

Human fertilization 1 icon.jpg
 ‎‎Fertilisation to
4 Blastomere
Page | Play
Human fertilization 2 icon.jpg
 ‎‎Fertilization
Page | Play

Other Species

Events


References

  1. <pubmed></pubmed>

Zamboni L. Mishell DR. Jr. Bell JH. snd Baca M. Fine structure of the human ovum in the pronuclear stage. (1966) J. Cell Biol, 30: 579-600. PMID 6008199

Additional Images

Historic 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, March 29) Embryology Carnegie stage 1. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_1

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G