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Subclavian muscle
Medical expert of the article
Last reviewed: 07.07.2025
The subclavian muscle (m. subclavius) is small in size and occupies a slit-like space between the 1st rib and the clavicle. It begins on the cartilage of the 1st rib, runs laterally, and attaches to the lower surface of the acromial end of the clavicle.
Function: Pulls the clavicle downward and forward, helping to strengthen the sternoclavicular joint.
Innervation: subclavian nerve (CV).
Blood supply: transverse cervical artery, thoracoacromial artery.
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