Superior rectal artery
|Superior rectal artery|
|Source||Inferior mesenteric artery|
|Vein||Superior rectal vein|
|Latin||Arteria rectalis superior,
arteria haemorrhoidalis superior
The superior rectal artery is the continuation of the inferior mesenteric artery. It descends into the pelvis between the layers of the mesentery of the sigmoid colon, crossing the left common iliac artery and vein.
These pierce the muscular coat of the bowel and run downward, as straight vessels, placed at regular intervals from each other in the wall of the gut between its muscular and mucous coats, to the level of the internal anal sphincter; here they form a series of loops around the lower end of the rectum, and communicate with the middle rectal artery (from the internal iliac artery) and with the inferior rectal artery (from the internal pudendal artery).
- Anatomy figure: 39:02-06 at Human Anatomy Online, SUNY Downstate Medical Center - "Branches of the inferior mesenteric artery."
- Anatomy photo:39:05-0112 at the SUNY Downstate Medical Center - "Intestines and Pancreas: Branches of the Inferior Mesenteric Artery"
- sup&infmesentericart at The Anatomy Lesson by Wesley Norman (Georgetown University)
- pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (pelvicarteries)