Add the ulnar nerve which is just proximal to the wrist the ulnar nerve gives off a palmar cutaneous branch which supplies the skin of the medial side of the palm. It also gives off a dorsal cutaneous branch which supplies the medial half of the dorsum of the hand, little finger, and the medial half of the ring. The ulnar nerve ends by dividing into a superficial and deep branch. The superficial branch supplies cutaneous fibers to the palmar surfaces of the little finger and the medial half of the ring finger. The deep branch supplies motor fibers to the hypothenar muscles, medial two lumbricals, adductor pollicis, deep head of flexor pollicis brevis, and all of the intersosseous muscles.
