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Question 1

What structures are supplied by the palmar cutaneous branch of the ulnar nerve?

Answer 1

The palmar cutaneous branch of the ulnar nerve supplies the skin on the medial side of the palm.

Question 2

What regions are supplied by the dorsal cutaneous branch of the ulnar nerve?

Answer 2

The dorsal cutaneous branch supplies the medial half of the dorsum of the hand, the 5th finger, and the medial half of the 4th finger.

Question 3

What does the superficial branch of the ulnar nerve innervate?

Answer 3

The superficial branch of the ulnar nerve innervates the anterior surfaces of the medial one and a half digits.

Question 4

Which hand muscles are innervated by the deep branch of the ulnar nerve?

Answer 4

The deep branch of the ulnar nerve innervates the hypothenar muscles, medial two lumbricals, adductor pollicis, deep head of flexor pollicis brevis, and all interossei.

Question 5

Why is the ulnar nerve referred to as the “nerve of fine movements”?

Answer 5

The ulnar nerve is called the “nerve of fine movements” because it innervates most of the intrinsic muscles involved in intricate hand movements.