Axillary Cavity May 2026

: Formed by the subscapularis , teres major , and latissimus dorsi muscles.

The axilla is defined by several muscular and skeletal landmarks that shift shape with shoulder movement: axillary cavity

: Formed by the axillary fascia and the skin of the armpit. : Formed by the subscapularis , teres major

: The narrowest part, formed by the intertubercular sulcus (bicipital groove) of the humerus. Core Contents : Formed by the subscapularis