Inferior rectal artery

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Artery: Inferior rectal artery
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The inferior rectal arteries(unlabeled) surround the anus.
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The bloodvessels of the rectum and anus, showing the distribution and anastomosis on the posterior surface near the termination of the gut. (Labeled as hemorrhoidal artery.)
Latin Arteria rectalis inferior,
arteria haemorrhoidalis inferior
Gray's p.619
Supplies Anal canal
Source Internal pudendal artery
Vein Inferior rectal veins

The inferior rectal artery (inferior hemorrhoidal artery) is an artery that supplies blood to the lower half of the anal canal.

Structure[edit]

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.

See also[edit]

Additional images[edit]

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.