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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.


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]]


{{ORahilly1987 figures}}
{{ORahilly1987 figures}}
[[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 Embryo 2937]][[Category:Carnegie Embryo 966]]

Revision as of 10:08, 17 October 2016

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



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, March 29) 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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