This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Deep branch of ulnar nerve innervates: 
Select and explain. 
A. I and II lumbricals, B. Palmaris brevis, C. Dorsal interossei, D. Opponens pollicis
C: Dorsal interossei
Answer: C: Dorsal interossei 
Explanation: There are twenty muscles in hands of which all are supplied by the ulnar nerve except the following five muscles which are supplied by median nerve:
1 Abductor pollicis brevis
2. Flexor pollicis brevis (also often receives additional supply from the deep branch of ulnar nerve)
3. Opponens pollicis
4. First lumbrical
5. Second lumbrical
Note: Palmaris brevis is supplied by superficial branch of ulnar nerve. All interossei are supplied by deep branch of ulnar nerve.