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Straight Arteries of Ileum
Cardiovascular System

Straight Arteries of Ileum

Arteriae rectae ileales

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Quick Facts

Origin: Distal continuations of the ileal arteries.

Course: Pass straight, nearly parallel to each other, between the layers of the mesentery to the ileum.

Branches: None.

Supplied Structures: Ileum.

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The straight arteries, or vasa recta, of the ileum are the distal continuations of the ileal arterial arcades.


The ileal straight arteries pass nearly parallel to each other between the layers of the mesentery. They are relatively short compared to the jejunal straight arteries, and seldom interconnected.


Close to the ileum, the straight arteries pass to one or the other aspect of the ileum. This arrangement of the terminal ends of the straight arteries, passing anterior or posterior, allows for distinct “layers” of vessels separated by a relatively avascular “surgical plane” through which access to the small intestine can be gained from the mesenteric side. The straight arteries terminate in a rich submucosal arterial plexus.

Supplied Structures

The straight arteries supply the ileum and all its layers (serosal, muscular, and mucosal).

List of Clinical Correlates

- Ischemia

Learn more about this topic from other Elsevier products


ScienceDirect image

When the artery is occluded blood is forced through the collateral vessels, drastically increasing fluid shear stress and triggering an inflammatory response which drives vessel remodeling.

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