Licence: Public Domain Mark
Credit: A manual of veterinary physiology / by F. Smith. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![u.c. h.v. Fig. 50.—Diagram of thk Fcetal Circulation. (Ellenbekger -Bonnet.) «<. v., umbilical vein ; </. v., ductus venosus ; pt. r., portal vein ; liver ; r. h., hepatic veins ; p. v. c, posterior vena cava ; r. a., right auricle ; /. 0., foramen ovale ; r. v., right ventricle ; ]>. a., pulmonary artery ; d. a., ductus arteriosus ; /. a., left auricle ; /. r., left ventricle ; a., the aorta ; a. a., arch of aorta ; au/. a., anterior aorta ; /. v., innominate veins; a. i\ c, anterior vena cava ; jX). a., posterior aorta ; ?. a., illiac, artery; h. a., hypogastric artery; n. (t., umbilical arteries ; ^. i-e., illiac veins; h. v., hypogastric veins ; ii. c, umbilical cord. The diagram actually represents the foetal circulation in ruminants: to make it applicable to the horse the ductus arteriosus (d. v.) must be supposed to be removed, the whole of the blood then traverses the liver by the union of the umbilical vein (;/. v.) with the portal vein {jjf. v.). The arrows indicate the course taken by the blood : observe how the stream entering the right auricle divides, part passing into the right ventricle, and part into the left auricle through the foramen ovale if. 0.).](https://iiif.wellcomecollection.org/image/b21933480_0408.jp2/full/800%2C/0/default.jpg)
