Axillary aery is divided into 3 pas by
Axillary aery is divided into 3 pas by Pectoralis minor The 3 pas are Superior thoracic aery Thoracoacromial trunk Subscapular aery Ref : BD Chaurasia Human Anatomy 5e vol 2 pg 55.
Pectoralis major
Clavicle
Pectoralis minor
Teres minor
Upper limb