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20
name the branches of the ulnar nerve. 3 direct branches.
Proximal to the carpal tunnel the ulnar nerve divides to give a :
Palmar cutaneous branch which passes superficial to the flexor retinaculum and palmar aponeurosis to supply the skin on
the medial side of the dorsum of the hand, the dorsum of the 5th finger and half of the 4th finger.
Distal to the carpal tunnel it divides into a superficial and deep
branch: the superficial branch gives off cutaneous branches to supply the anterior surface of the medial 1 1/2 fingers. The deep branch supplies the hypothenar muscle, the medial 2 lumbricals, adductor pollicis, flexor pollicis brevis and all the interossei.
Palmar cutaneous branch which passes superficial to the flexor retinaculum and palmar aponeurosis to supply the skin on
the medial side of the dorsum of the hand, the dorsum of the 5th finger and half of the 4th finger.
Distal to the carpal tunnel it divides into a superficial and deep
branch: the superficial branch gives off cutaneous branches to supply the anterior surface of the medial 1 1/2 fingers. The deep branch supplies the hypothenar muscle, the medial 2 lumbricals, adductor pollicis, flexor pollicis brevis and all the interossei.
