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This document provides an anatomical overview of the major muscles, nerves, arteries, and veins in the upper extremity. It describes the origins, insertions, and innervations of muscles like the flexor digitorum profundus and extensor carpi radialis longus. The document also maps the pathways of key arteries like the brachial artery and veins like the basilic vein. It outlines the branches of the brachial plexus and their contributions to the nerves of the arm.Read less