15 Common digital nerves. Nn. digitales communes. Nerves that run in the spaces between the first four fingers and then divide. A
16 Proper palmar digital nerves. Nn. digitales palmares proprii. Terminal branches of common palmar digital nerves. They supply the palmar aspect of the skin of the radial 3V2 fingers and dorsal aspect of the skin of the radial 21/2 distal phalanges. A
17 Ulnar nerve. N. ulnaris. Nerve that arises from the medial cord (C8, T1). It initially lies in the medial bicipital groove, breaks through the medial intermuscular septum and then, after passage in the groove for the ulnar nerve, penetrates the flexor carpi ulnaris. C
18 Muscular branches. Rami musculares. They supply the flexor carpi ulnaris and the ulnar part of the flexor digitorum profundus. C
19 Dorsal branch of ulnar nerve. Ramus dorsalis n. ulnaris. Cutaneous branch passing between the distal and middle third of the forearm beneath the flexor carpi ulnaris to innervate the dorsum of the hand. B C
20 Dorsal digital nerves. Nn. digitales dorsales. Individual branches to the little finger, ring finger and the ulnar side of the middle finger. This area of innervation can be displaced by the radial nerve. B
21 Palmar branch of ulnar nerver. Ramus palmaris nervi ulnaris. Nerve that arises in the distal third of the forearm, penetrates the deep fascia and supplies the skin on the palmar surface of the hand. C
22 Superficial branch. Ramus superficialis. Branch that courses beneath the palmar aponeurosis and divides to form the common palmar distal nerves and a fine branch to the palmaris brevis. C
23 Common palmar digital nerves. Nn. digitales palmares communes. Usually only one branch which runs in the region between the ring and little fingers. C
24 Proper palmar digital nerves. Nn. digitales palmares proprii. Cutaneous nerves to the little finger and the ulnar side of the ring finger. They also supply the dorsal aspect of the middle and distal phalanges of the 11/2 ulnar fingers. C
25 Deep branch (of ulnar nerve). Ramus profundus. Branch that curves around the hamulus to supply the muscles of the hypothenar eminence, the interossei, the two ulnar lumbricals, the adductor pollicis and the deep head of the flexor pollicis brevis. C
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