triceps brachii long head

axilla anatomy, axillary anatomy, axilla, anatomy of axilla, axillary region, Axillary, axillary muscle anatomy, axillary muscles, axilla muscles, brachialis muscle, anatomy axilla, axillary area, thoracodorsal nerve, pronator teres, axillary region anatomy, axillary muscle, axilla muscle, upper limb muscles, coracobrachialis muscle, teres major surface anatomy,