Axillary Cavity -
: Formed by the subscapularis , teres major , and latissimus dorsi muscles.
The cavity is filled with fat and connective tissue, which cushions several major structures: axillary cavity
: The narrowest part, formed by the intertubercular sulcus (bicipital groove) of the humerus. Core Contents : Formed by the subscapularis , teres major
: Formed by the axillary fascia and the skin of the armpit. : Formed by the subscapularis
: Consists of the serratus anterior muscle and the first four or five ribs.
The axilla is defined by several muscular and skeletal landmarks that shift shape with shoulder movement:
: Primarily composed of the pectoralis major and pectoralis minor muscles.


