Teres minor

  • The teres minor (also teres minor muscle, latin: musculus teres minor) is a round muscle of the shoulder girdle.

    Origin

    The teres minor muscle arises from the lateral border of the scapula.

    Insertion

    The fibers of the teres minor pass laterally to the humerus and insert onto the greater tubercle of the humerus.

    Action

    The teres minor is one of the rotator cuff muscles that stabilizes the shoulder and provides external rotation and extension of the upper arm.

    Innervation

    The teres minor is innervated by the axillary nerve.