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Sigmoid arteries

The sigmoid arteries (Latin: arteriae sigmoideae) are two to four branches arising from the inferior mesenteric artery. They pass inferiorly and to the left, situated within the sigmoid mesocolon. The sigmoid arteries supply the lowest part of the descending colon and the sigmoid colon.

Abdomen, Digestive system, Gastrointestinal tract, Large intestine, Cecum, Colon, Arterial blood supply, Sigmoid artery, Anterior view — Arterial blood supply of large intestine (cecum and colon) by Anatomy.app

The sigmoid arteries anastomose superiorly with branches from the left colic artery. Inferiorly, they form anastomoses with branches arising from the superior rectal artery.