Blood supply of superior extremity Blood Supply of the Upper Limb (Superior Extremity) Main artery: right Subclavian artery branch of brachiocephalic trunk and left subclavian artery is the direct branch of arch of aorta → Axillary artery → Brachial artery Branches: Subclavian: gives rise to thyrocervical trunk, vertebral, and internal thoracic arteries Axillary: gives thoracoacromial, lateral thoracic, subscapular, anterior & posterior circumflex humeral arteries Brachial: gives profunda brachi

Superficial posterior forearm muscles

Lumbar veins

Hand anatomy

Bradley Blair Osteopath on Instagram: "The adductor pollicis is a triangular muscle located in the hand that plays a key role in thumb movement, particularly in adduction (bringing the thumb toward the palm or index finger). Anatomy • Origin: • Oblique head: Bases of the 2nd and 3rd metacarpal bones, capitate, and adjacent carpal bones. • Transverse head: Anterior surface of the shaft of the 3rd metacarpal bone. • Insertion: Medial side of the base of the proximal phalanx of the thumb and the ex