Collateral Branch of Third Posterior Intercostal Artery (Left)
Ramus collateralis arteriae intercostalis posterioris tertiae
Read moreQuick Facts
Origin: Posterior intercostal artery.
Course: Corresponding intercostal space.
Branches: None.
Supplied Structures: Thoracic wall.
Related parts of the anatomy
Origin
The collateral branch arises from the posterior intercostal artery near the angle of the rib.
Course
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).
Branches
There are no named branches.
Supplied Structures
The collateral branch supplies the structures of its intercostal space.
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Artery
Arteries are vessels transporting blood between heart, tissues, and other organs in order to supply them with nutrition and oxygen.
