Anatomy, Shoulder and Upper Limb, Axilla - StatPearls - NCBI
: Primarily composed of the pectoralis major and pectoralis minor muscles. axillary cavity
The cavity is filled with fat and connective tissue, which cushions several major structures: Anatomy, Shoulder and Upper Limb, Axilla - StatPearls
: The top of the pyramid, formed by the first rib , the scapula , and the clavicle . It connects the axilla to the posterior triangle of the neck. Shoulder and Upper Limb
: Formed by the axillary fascia and the skin of the armpit.
The axilla is defined by several muscular and skeletal landmarks that shift shape with shoulder movement:
: Formed by the subscapularis , teres major , and latissimus dorsi muscles.