File:Gray0476.jpg

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Human Sinus Venosus and its Tributaries

Human embryo with heart and anterior body-wall removed to show the sinus venosus and its tributaries.

(After His.)

The right umbilical and right vitelline veins shrivel and disappear
the left umbilical becomes enlarged and opens into the upper venous ring of the vitelline veins
with the atrophy of the yolk-sac the left vitelline vein also undergoes atrophy and disappears
a direct branch is established between this ring and the right hepatic vein
this branch is named the ductus venosus

at the porta hepatis (transverse fissure of the liver) the umbilical vein divides into two branches

the larger is joined by the portal vein, and enters the right lobe
the smaller is continued upward (ductus venosus) and joins the inferior vena cava

forms a wide channel
blood returned from the placenta is carried directly to the heart without passing through the liver

Historic Disclaimer - information about historic embryology pages
Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History \| Historic Embryology Papers)

iBook - Gray's Embryology
	iTunes link \| iBooks Store Description - an extract of the embryology content from Anatomy of the Human Body By Henry Gray Philadelphia: Lea & Febiger, 1918. Releases First Edition - Jan 2012 Second Edition - March 2012 Repaired formatting and image display issues related to Pad rotated display and minor editing issues. Print length 169 pages, 41.6 MB, Language English. The current website also includes numerous images from this textbook, see Anatomy of the Human Body by Henry Gray and Category:Gray's 1918 Anatomy. Note the also Historic Disclaimer.

Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.

Cite this page: Hill, M.A. (2024, April 27) Embryology Gray0476.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0476.jpg

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	Date/Time	Dimensions	User	Comment
current	11:19, 6 May 2011	600 × 609 (99 KB)	S8600021 (talk \| contribs)
	11:18, 6 May 2011	600 × 609 (63 KB)	S8600021 (talk \| contribs)
	11:17, 6 May 2011	600 × 609 (53 KB)	S8600021 (talk \| contribs)
	22:25, 11 October 2009	493 × 500 (44 KB)	S8600021 (talk \| contribs)	Human embryo with heart and anterior body-wall removed to show the sinus venosus and its tributaries. (After His.)

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