Subclavian muscle
The subclavian muscle , m. Subclavius, small, oblong, situated below the clavicle and almost parallel to it; Covered with a large pectoralis muscle. The muscle begins on the bone and cartilaginous parts of the 1st rib. From here it is sent laterally and upwards and is attached to the lower surface of the acromial part of the clavicle.
Function: pulls the clavicle downward and medially, holding it in this way in the sternoclavicular joint: with the immobile girdle of the upper limb raises the first rib, being an auxiliary respiratory muscle.
Innervation: n. Subclavius (Cv).
Blood supply: a. Thoracica superior, a. Thoracoacromialis.
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