: The narrowest part, formed by the intertubercular sulcus (bicipital groove) of the humerus. Core Contents
: 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. axillary cavity
: Formed by the subscapularis , teres major , and latissimus dorsi muscles. : The narrowest part, formed by the intertubercular
Anatomy, Shoulder and Upper Limb, Axilla - StatPearls - NCBI : The narrowest part
The cavity is filled with fat and connective tissue, which cushions several major structures:
: Consists of the serratus anterior muscle and the first four or five ribs.