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Collateral Branch of Eleventh Posterior Intercostal Artery (Right)
Cardiovascular System

Collateral Branch of Eleventh Posterior Intercostal Artery (Right)

Ramus collateralis arteriae intercostalis posterioris undecimae

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The collateral branch arises from the posterior intercostal artery near the angle of the rib.


The collateral branch of the posterior intercostal artery runs forward within the intercostal space, keeping close to the superior border of the rib below. It is accompanied by a collateral branch of the corresponding intercostal nerve (or collateral branch of the anterior ramus of thoracic nerve).


There are no named branches.

Supplied Structures

The collateral branch supplies the structures of its intercostal space.

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Arteries are vessels transporting blood between heart, tissues, and other organs in order to supply them with nutrition and oxygen.

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