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Pectoral Branches of Thoracoacromial Artery
Cardiovascular System

Pectoral Branches of Thoracoacromial Artery

Rami pectorales arteriae thoracoacromialis

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Origin

The pectoral branch arises from the thoracoacromial artery as it travels around the medial border of the pectoralis minor muscle and pierces the clavipectoral fascia. It is the largest branch of the thoracoacromial artery.

Course

The pectoral branch descends between the pectoralis major and minor muscles.

Branches

There are no named branches.

Supplied Structures

The pectoral branches of thoracoacromial artery supplies both the pectoralis major and minor muscles, while also supplying the mammary gland.

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Artery

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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