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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. It divides, opposite the third sacral vertebra into two branches, which descend one on either side of the rectum.
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.
The sigmoid arteries are 2–5 branches of the inferior mesenteric artery that are distributed to the distal ... and with the superior rectal artery inferiorly. [2 ...
The IMA arises from the anterior aspect of the abdominal aorta. [2] [3]Its origin is situated at the L3 vertebral level, [2] [3] below the origins of the two renal arteries, [3] 3-4 cm above the aortic bifurcation, [3] [2] at the level of the umbilicus, and posterior to the inferior border of the horizontal (III) part of the duodenum.
The superior rectal artery is a single artery that is a continuation of the inferior mesenteric artery, when it crosses the pelvic brim. [8] It enters the mesorectum at the level of S3, and then splits into two branches, which run at the lateral back part of the rectum, and then the sides of the rectum.
The term "intestinal arteries" can be confusing, because these arteries only serve a small portion of the intestines. They do not supply any of the large intestine. The large intestine is primarily supplied by the right colic artery, middle colic artery, and left colic artery. They do not supply the duodenum of the small intestine.
The middle rectal artery usually arises from the internal iliac artery. [1] It is distributed to the rectum above the pectinate line. [2] It anastomoses with the inferior vesical artery, superior rectal artery, and inferior rectal artery. [2] In males, the middle rectal artery may give off branches to the prostate and the seminal vesicles. In ...
Rectal artery can refer to: Superior rectal artery (superior hemorrhoidal artery) Middle rectal artery (middle hemorrhoidal artery) Inferior rectal artery (inferior ...