Musculocutaneous Nerve

Sunday, June 14, 2015

The musculocutaneous nerve is a branch that comes off the brachial plexus lateral cord. It is composed of both motor and sensory fibers that originate from the C5, C6, and C7. As it runs deeply down the arm, the musculocutaneous nerve gives off several nervous filaments that innervate the brachialis and biceps muscles, and the humerus as well. When it goes on down into the forearm, it changes its name for "lateral cutaneous nerve of the forearm".