Axillary Cavity Apr 2026

: Consists of the serratus anterior muscle and the first four or five ribs.

: 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

: The narrowest part, formed by the intertubercular sulcus (bicipital groove) of the humerus. Core Contents : Consists of the serratus anterior muscle and

The axilla is defined by several muscular and skeletal landmarks that shift shape with shoulder movement: formed by the first rib