Sigmoid arteries

The sigmoid arteries are 2–5 branches of the inferior mesenteric artery that are distributed to the distal descending colon and the sigmoid colon.^[1]

Sigmoid arteries
Sigmoid colon and rectum, showing distribution of branches of inferior mesenteric artery and their anastomoses
The inferior mesenteric artery and its branches (sigmoid arteries labeled at bottom right)
Details
Identifiers
Latin	arteriae sigmoideae
TA98	A12.2.12.072
TA2	4295
FMA	14830
Anatomical terminology [edit on Wikidata]

Anatomy

Course and relations

The sigmoid arteries course obliquely inferior-ward and to the left, passing posterior to the peritoneum and in anterior to the psoas major, ureter,^[2] and Gonadal artery.^[1]

Anastomoses

The sigmoid arteries anastomose with the left colic superiorly, and with the superior rectal artery inferiorly.^[2]