Axillary Cavity -

: Formed by the axillary fascia and the skin of the armpit.

The , commonly referred to as the axilla or "armpit," is a four-sided pyramidal space located at the junction of the upper limb and the thorax. It serves as a vital gateway for neurovascular and lymphatic structures traveling between the neck/torso and the upper extremity. Anatomical Boundaries axillary cavity

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