Rectal artery

The rectal arteries, from Gray's Anatomy.

The Rectal Artery is a branch of the Inferior Mesenteric Artery that supplies blood to the rectum and the upper part of the anus. There are usually three rectal arteries: the superior, middle, and inferior rectal arteries.

Superior Rectal Artery

The Superior Rectal Artery is the continuation of the inferior mesenteric artery. It descends into the pelvis to reach the rectum and then divides into two branches that descend on either side of the rectum.

Middle Rectal Artery

The Middle Rectal Artery arises from the Internal Iliac Artery. It crosses the ischiorectal fossa to reach the rectum, supplying the lower part of the rectum and the upper part of the anus.

Inferior Rectal Artery

The Inferior Rectal Artery is a branch of the Internal Pudendal Artery. It crosses the ischiorectal fossa, supplying the lower part of the rectum and the upper part of the anus.

Clinical Significance

Knowledge of the rectal arteries is important in surgical procedures involving the rectum and anus, such as Hemorrhoidectomy and Rectal Prolapse repair.

See Also

• Inferior Mesenteric Artery
• Internal Iliac Artery
• Internal Pudendal Artery
• Hemorrhoidectomy
• Rectal Prolapse

References

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