The Median Nerve is a major nerve in the arm that plays a crucial role in hand function. It originates from the brachial plexus, a network of nerves in the shoulder, and travels down the arm to the hand. This nerve is responsible for controlling the muscles that allow for fine movements of the fingers, particularly the thumb, index, and middle fingers. In addition to motor functions, the median nerve also provides sensory information from the skin of the palm and fingers. It is commonly associated with conditions like carpal tunnel syndrome, where it becomes compressed, leading to pain, numbness, and weakness in the hand. Proper functioning of the median nerve is essential for daily activities that require hand dexterity.