Inferior rectal artery

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Inferior rectal artery
Gray542.png
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.)
Details
SourceInternal pudendal artery
VeinInferior rectal veins
SuppliesAnal canal
Identifiers
LatinArteria rectalis inferior,
arteria haemorrhoidalis inferior
TAA12.2.15.039
FMA20824
Anatomical terminology

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.

Additional images[edit]

See also[edit]

References[edit]

This article incorporates text in the public domain from page 619 of the 20th edition of Gray's Anatomy (1918)

External links[edit]