middle rectal artery(redirected from Middle hemorrhoidal branches)
mid·dle rec·tal ar·ter·y[TA]
origin, internal iliac; distribution, middle portion of rectum; anastomoses, inferior rectal and superior rectal. Because the latter is a tributary of the portal system, this is a portosystemic or portocaval anastomosis.
mid·dle rec·tal ar·te·ry(mid'ĕl rek'tăl ahr'tĕr-ē) [TA]
middle rectal artery
A branch of the internal iliac artery or the inferior vesical artery; it supplies blood to the lower rectum and upper anal canal.
See also: artery