superficial branch of ulnar nerve superficial branch of ulnar nerve the superficial branch of the ulnar nerve is a terminal branch of the ulnar nerve. it supplies the palmaris brevis and the skin on the ulnar side of the hand. it also divides into a common palmar digital nerve and a proper palmar digital nerve. superficial branch of ulnar nervesuperficial palmar nerves. (superficial branch of ulnar labeled at center right.)diagram of segmental distribution of the cutaneous nerves of the right upper extremity.detailsfromulnar nerveinnervatespalmaris brevisidentifierslatinramus superficialis nervi ulnarista98a14.2.03.045ta26454fma44876anatomical terms of neuroanatomy the proper digital branches are distributed to the fingers in the same manner as those of the median nerve.