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Lateral Dorsal Cutaneous Branch of Subcostal Artery (Right)
Cardiovascular System

Lateral Dorsal Cutaneous Branch of Subcostal Artery (Right)

Ramus cutaneus dorsalis lateralis arteriae subcostalis

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Origin

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

Course

The lateral cutaneous branch follows the lateral branch of the posterior ramus of the corresponding thoracic nerve. It travels posteriorly, between the intertransverse ligaments and muscles and the vertebral body. It courses between the longissimus and iliocostalis muscles and piercing the latissimus dorsi to become superficial.

Branches

There are no named branches.

Supplied Structures

Along its course, the lateral cutaneous branch of the dorsal branch of the posterior intercostal artery supplies the longissimus thoracis, iliocostalis, and latissimus dorsi muscles, overlying fascia and skin.

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Artery

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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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