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Medial Dorsal Cutaneous Branch of Subcostal Artery (Left)
Cardiovascular System

Medial Dorsal Cutaneous Branch of Subcostal Artery (Left)

Ramus cutaneus dorsalis medialis arteriae subcostalis

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The lateral and medial cutaneous branches arise from the dorsal branch of the subcostal artery.


The medial cutaneous branch follows the medial branch of the posterior ramus of the corresponding thoracic nerve. It travels posteriorly, crossing the transverse processes of the adjacent vertebrae. It courses behind the longissimus and spinalis muscles and piercing the latissimus dorsi muscle to become superficial.


There are no name branches.

Supplied Structures

Along its course, the medial cutaneous branch of the dorsal branch of the posterior intercostal artery supplies the longissimus thoracis, spinalis, and skin adjacent to the vertebral column.

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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