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==Fig. 20-2. Head Superficial Vascular Plexus - Stages 20-23==
==Fig. 20-2. Head Superficial Vascular Plexus - Stages 20-23==


Composite drawing showing the edge of the superficial vascular plexus in the head at stages 20-23. A subcutaneous capillary plexus that spreads upward toward the vertex of the head is a conspicuous feature of specimens measuring from about 20-24 mm in length.  
Composite drawing showing the edge of the superficial vascular plexus in the head at stages 20-23.  
 
A subcutaneous capillary plexus that spreads upward toward the vertex of the head is a conspicuous feature of specimens measuring from about 20-24 mm in length.  


The transition from vascular to avascular mesoderm is more gradual in earlier stages and becomes more abrupt later.
The transition from vascular to avascular mesoderm is more gradual in earlier stages and becomes more abrupt later.
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Numbers refer to specific Carnegie embryos.
Numbers refer to specific Carnegie embryos.


:'''Links:''' [[Week 8]] | [[Carnegie stage 20]] | [[Carnegie stage 21]] | [[Carnegie stage 22]] | [[Carnegie stage 23]]
<br>
{{Carnegie stage 20 links}}
{{Carnegie stage 21 links}}
{{Carnegie stage 22 links}}
{{Carnegie stage 23 links}}
<br>
{{ORahilly1987 figures}}
{{ORahilly1987 figures}}
[[Category:Head]][[Category:Human Embryo]][[Category:Week 8]]
[[Category:Head]][[Category:Human Embryo]][[Category:Cardiovascular]][[Category:Week 8]]
[[Category:Carnegie Stage 20]][[Category:Carnegie Stage 21]][[Category:Carnegie Stage 22]][[Category:Carnegie Stage 23]]
[[Category:Carnegie Stage 20]][[Category:Carnegie Stage 21]][[Category:Carnegie Stage 22]][[Category:Carnegie Stage 23]]
[[Category:Carnegie Embryo 2937]][[Category:Carnegie Embryo 966]]

Latest revision as of 13:28, 22 May 2017

Fig. 20-2. Head Superficial Vascular Plexus - Stages 20-23

Composite drawing showing the edge of the superficial vascular plexus in the head at stages 20-23.

A subcutaneous capillary plexus that spreads upward toward the vertex of the head is a conspicuous feature of specimens measuring from about 20-24 mm in length.

The transition from vascular to avascular mesoderm is more gradual in earlier stages and becomes more abrupt later.

Numbers refer to specific Carnegie embryos.

Links: Week 8 | Carnegie stage 20 | Carnegie stage 21 | Carnegie stage 22 | Carnegie stage 23



Stage 20 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Category:Carnegie Stage 20 | Next Stage 21
  Historic Papers: 1914 head | 1954 Stage 19-23
Stage 21 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 21 | Next Stage 22
  Historic Papers: 1897 Coelom | 1911 Larynx | 1954 Stage 19-23
Stage 22 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 22 | Next Stage 23
Week 8, GA week 10, 54 - 56 days, CRL 23 - 28 mm, Carnegie Embryos
  Historic Papers: 1914 | 1954 Stage 19-23
Stage 23 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 23 | Next Fetal Development
  Historic Papers: 1954 Stage 19-23



1987 Stages: Introduction | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | References | Appendix 1 | Appendix 2 | Historic Papers | Embryonic Development



Cite this page: Hill, M.A. (2024, April 26) Embryology ORahilly1987 fig20-2.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:ORahilly1987_fig20-2.jpg

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

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