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,[1] 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.
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
:022was 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.