Rectal venous plexus

Rectal venous plexus
Rectal venous plexus
	Scheme of the anastomosis of the veins of the rectum.
	The veins of the right half of the male pelvis.
Details
Drains to	Superior rectal vein,; middle rectal vein(s),; inferior rectal veins
Identifiers
Latin	plexus venosus rectalis,; plexus haemorrhoidalis
TA98	A12.3.10.010
TA2	5031
FMA	18933
	Anatomical terminology

The rectal venous plexus (or hemorrhoidal plexus^[2]) is the venous plexus surrounding the rectum.^[3] It consists of an internal and an external rectal plexus.^[4]^: 598^[5]^: 294 It is drained by the superior, middle, and inferior rectal veins. It forms a portosystemic (portocaval) anastomosis.^[3] This allows rectally administered medications to bypass first pass metabolism.^{[citation needed]}

Despite the inclusion of the term "rectal" into the name, the venous plexus is positionally, functionally, and clinically primarily related to the anal canal.^[6]

^ "Anatonomina". www.terminologia-anatomica.org. Retrieved 2023-07-08.
^ "plexus venosus rectalis". TheFreeDictionary.com. Retrieved 2023-07-08.
^ ^a ^b Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 1198. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
^ Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2018). Clinically Oriented Anatomy (8th ed.). Wolters Kluwer. ISBN 978-1-4963-4721-3.
^ Cite error: The named reference :022 was invoked but never defined (see the help page).
^ Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2017). Essential Clinical Anatomy (6th ed.). Lippincott Williams & Wilkins. p. 598. ISBN 978-1496347213.

[1] "Anatonomina". www.terminologia-anatomica.org. Retrieved 2023-07-08.

[2] "plexus venosus rectalis". TheFreeDictionary.com. Retrieved 2023-07-08.

[:224-3] Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 1198. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)

[:0-4] Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2018). Clinically Oriented Anatomy (8th ed.). Wolters Kluwer. ISBN 978-1-4963-4721-3.

[:022-5] Cite error: The named reference :022 was invoked but never defined (see the help page).

[Moore-20112-6] Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2017). Essential Clinical Anatomy (6th ed.). Lippincott Williams & Wilkins. p. 598. ISBN 978-1496347213.

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