radial nerve

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An important mixed sensory and motor nerve of the arm, forming the largest branch of the brachial plexus. It extends downwards behind the humerus, supplying muscles of the upper arm, to the elbow, which it supplies with branches, and then runs parallel with the radius. It supplies sensory branches to the base of the thumb and a small area of the back of the hand.

Subjects: Medicine and Health.

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