File:Embryonic Circulations.jpg

From Embryology

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The Three Early Embryonic Circulations

Three paired veins drain into the primordial heart tube:

  1. vitelline veins (returning poorly oxygenated blood from the yolk sac)
  2. umbilical veins (carrying well-oxygenated blood from the primordial placenta)
  3. common cardinal veins (return poorly oxygenated blood from the body of the embryo).

The vitelline venous system gives rise to the liver sinusoids and portal system, and forms the ductus venosus which shunts blood from the umbilical vein to the IVC.


Begin Intermediate: Primordial Heart Tube  Heart Tube Looping  Atrial Ventricular Septation  Outflow Tract  Heart Valves  Cardiac Abnormalities  Vascular Overview

Cite this page: Hill, M.A. (2024, March 1) Embryology Embryonic Circulations.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Embryonic_Circulations.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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current11:28, 14 March 2010Thumbnail for version as of 11:28, 14 March 20101,552 × 1,028 (171 KB)Z3212774 (talk | contribs)category:Heart ILP The three early embryonic circulations. Three paired veins drain into the primordial heart tube: vitelline veins (returning poorly oxygenated blood from the yolk sac), umbilical veins (carrying well-oxygenated blood from the primor