Unit 2 - Upper Limb: Ulnar Nerve (C7-T1) (Ex. II)

Question 1

motor branches –> muscular branch from S ulnar n.

Answer 1

palmaris brevis

Question 2

motor branches –> muscular branches from deep ulnar n.

Answer 2

abductor digiti minimi
flexor digiti minimi
opponens digiti minimi
3rd and 4th lumbricals
palmar and dorsal interosseous muscles
adductor pollicis
flexor pollicis brevis (deep head)

Question 3

sensory branches

Answer 3

articular branches –> capsules of elbow, carpal, and MCP joints
dorsal branch
- terminal branches: dorsal digital nn.
palmar branch
proper palmar digital n. (from superficial branch)
common palmar digital n. (from superficial branch)
- terminal branches: proper palmar digital nn.

Question 4

motor branches –> direct muscular branches

Answer 4

flexor carpi ulnaris

flexor digitorum profundus (ulnar 1/2)