Inferior rectal veins
The lower part of the external hemorrhoidal plexus is drained by the inferior rectal veins (or inferior hemorrhoidal veins) into the internal pudendal vein.
| Inferior rectal veins | |
|---|---|
Scheme of the anastomosis of the veins of the rectum | |
| Details | |
| Drains from | rectum |
| Drains to | internal pudendal vein |
| Artery | inferior rectal artery |
| Identifiers | |
| Latin | venae rectales inferiores |
| TA98 | A12.3.10.021 |
| TA2 | 5033 |
| FMA | 70913 |
| Anatomical terminology | |
Veins superior to the middle rectal vein in the colon and rectum drain via the portal system to the liver. Veins inferior, and including, the middle rectal vein drain into systemic circulation and are returned to the heart, bypassing the liver.
Pathologies involving the Inferior rectal veins may cause lower GI bleeding. Depending on the degree of inflammation, they are given a grade level ranging from 1 through 4.
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