Inferior rectal artery
| Inferior rectal artery | |
|---|---|
 The inferior rectal arteries(unlabeled) surround the anus. | |
 | |
| Details | |
| Source | Internal pudendal artery |
| Vein | Inferior rectal veins |
| Supplies | Anal canal |
| Identifiers | |
| Latin |
Arteria rectalis inferior, arteria haemorrhoidalis inferior |
| TA | A12.2.15.039 |
| FMA | 20824 |
The inferior rectal artery (inferior hemorrhoidal artery) is an artery that supplies blood to the lower half of the anal canal.
Structure
The inferior rectal artery arises from the internal pudendal artery as it passes above the ischial tuberosity.
Piercing the wall of the pudendal canal, it divides into two or three branches which cross the ischioanal fossa, and are distributed to the muscles and integument of the anal region, and send offshoots around the lower edge of the gluteus maximus to the skin of the buttock.
They anastomose with the corresponding vessels of the opposite side, with the superior and middle rectal arteries, and with the perineal artery.
Additional images
The perineum. The integument and superficial layer of superficial fascia reflected.
See also
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
External links
- Anatomy figure: 41:04-05 at Human Anatomy Online, SUNY Downstate Medical Center - "Inferior view of female perineum, branches of the internal pudendal artery."
- Anatomy figure: 42:03-05 at Human Anatomy Online, SUNY Downstate Medical Center - "Branches of internal pudendal artery in the male perineum."
- Anatomy image:9077 at the SUNY Downstate Medical Center
- Anatomy image:9085 at the SUNY Downstate Medical Center
- perineum at The Anatomy Lesson by Wesley Norman (Georgetown University) (analtriangle3)
- figures/chapter_32/32-2.HTM: Basic Human Anatomy at Dartmouth Medical School
- figures/chapter_32/32-3.HTM: Basic Human Anatomy at Dartmouth Medical School
