File:Stage 22 image 223.jpg

From Embryology

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Dorsal Aorta - Human Embryo Carnegie stage 22

This is a cross-section of the dorsal aorta lying anterior to the cartilage of the developing vertebra.

  • Note the developing aorta wall structure including smooth muscle.
  • Note the small arteriole located in the connective tissue surrounding the aorta.
  • Note the large number of nucleated red blood cells in circulation within the embryo.

Links: image dorsal aorta | image RBCs | Cardiovascular System - Blood Development | Carnegie stage 22
Selected Embryo Histology - Week 8 (Stage 22)  
Links: Carnegie stage 22 | Week 8

Image Source: UNSW Embryology, no reproduction without permission.

Cite this page: Hill, M.A. (2024, April 24) Embryology Stage 22 image 223.jpg. Retrieved from

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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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current17:08, 17 January 2012Thumbnail for version as of 17:08, 17 January 20121,128 × 846 (366 KB)S8600021 (talk | contribs)==Dorsal Aorta - Human Embryo Carnegie stage 22== Category:Indexed pages Category:Human Embryo Category:Carnegie Stage Category:Carnegie Stage 22 Category:Week 8 Category:Blood Category:Blood Vessel Category:Smoot Muscle