🧩 Multiple Choice Questions – Forearm and Hand

1. The main nerve of the anterior compartment of forearm is:

A. Ulnar nerve
B. Median nerve
C. Radial nerve
D. Musculocutaneous nerve
✅ Answer: B – Median nerve
→ Supplies all flexors except FCU and medial ½ of FDP.

2. The muscle forming the medial boundary of cubital fossa is:

A. Pronator teres
B. Brachioradialis
C. Biceps brachii
D. Supinator
✅ Answer: A – Pronator teres

3. The nerve compressed in carpal tunnel syndrome is:

A. Ulnar nerve
B. Median nerve
C. Radial nerve
D. Anterior interosseous nerve
✅ Answer: B – Median nerve

4. The flexor of distal interphalangeal joints of fingers is:

A. FDS
B. FDP
C. Lumbricals
D. Palmar interossei
✅ Answer: B – Flexor digitorum profundus

5. The muscle responsible for opposition of thumb is:

A. Flexor pollicis brevis
B. Abductor pollicis brevis
C. Opponens pollicis
D. Adductor pollicis
✅ Answer: C – Opponens pollicis

6. The nerve supplying most intrinsic muscles of hand is:

A. Radial nerve
B. Ulnar nerve
C. Median nerve
D. Posterior interosseous nerve
✅ Answer: B – Ulnar nerve
(Exception – LOAF muscles by median.)

7. Which muscle lies deepest in front of forearm?

A. FCR
B. FDS
C. FDP
D. Pronator quadratus
✅ Answer: D – Pronator quadratus

8. The chief supinator of forearm when flexed is:

A. Biceps brachii
B. Supinator
C. Pronator teres
D. Brachioradialis
✅ Answer: A – Biceps brachii

9. The lateral epicondyle gives common origin to:

A. Flexors
B. Extensors
C. Pronators
D. Lumbricals
✅ Answer: B – Extensors

10. The first dorsal compartment under extensor retinaculum contains:

A. EPL + ECRB
B. APL + EPB
C. ED + EI
D. EDM + ECU
✅ Answer: B – Abductor pollicis longus & Extensor pollicis brevis

11. The radial artery mainly forms which palmar arch?

A. Superficial palmar arch
B. Deep palmar arch
C. Dorsal carpal arch
D. Palmar carpal arch
✅ Answer: B – Deep palmar arch

12. The ulnar artery mainly forms which palmar arch?

A. Superficial palmar arch
B. Deep palmar arch
C. Dorsal arch
D. Metacarpal arch
✅ Answer: A – Superficial palmar arch

13. The nerve involved in “wrist drop” is:

A. Median nerve
B. Ulnar nerve
C. Radial nerve
D. Musculocutaneous nerve
✅ Answer: C – Radial nerve

14. The muscle tested by Froment’s sign is:

A. Abductor pollicis brevis
B. Adductor pollicis
C. Flexor pollicis longus
D. Opponens pollicis
✅ Answer: B – Adductor pollicis (ulnar nerve)

15. The common site of tenderness in scaphoid fracture is:

A. Thenar eminence
B. Anatomical snuffbox
C. Mid-palmar space
D. Flexor retinaculum
✅ Answer: B – Anatomical snuffbox

16. The muscle forming roof of the carpal tunnel is:

A. Palmar aponeurosis
B. Flexor retinaculum
C. Deep fascia of forearm
D. Palmaris longus
✅ Answer: B – Flexor retinaculum

17. The lumbricals are supplied by:

A. Median only
B. Ulnar only
C. Median and ulnar both
D. Radial nerve
✅ Answer: C – Median (1st–2nd) & Ulnar (3rd–4th)

18. The interossei produce which movements of fingers?

A. Flexion
B. Extension
C. Abduction and Adduction
D. Opposition
✅ Answer: C – Abduction and Adduction

19. The dorsal digital expansion receives contributions from:

A. Extensor digitorum only
B. Lumbricals only
C. Interossei only
D. All of the above
✅ Answer: D – Extensor digitorum + Lumbricals + Interossei

20. Which muscle is not supplied by posterior interosseous nerve?

A. ECRB
B. EPL
C. EI
D. ED
✅ Answer: A – Extensor carpi radialis brevis (by deep branch of radial before it becomes PIN)

21. The nerve accompanying the ulnar artery in the hand is:

A. Median nerve
B. Radial nerve
C. Ulnar nerve
D. Posterior interosseous nerve
✅ Answer: C – Ulnar nerve

22. The space between adductor pollicis and flexor tendons is:

A. Thenar space
B. Mid-palmar space
C. Pulp space
D. Parona’s space
✅ Answer: A – Thenar space

23. The strongest wrist flexor is:

A. FCR
B. FCU
C. Palmaris longus
D. FDS
✅ Answer: B – Flexor carpi ulnaris

24. The nerve affected in “ape-hand” deformity is:

A. Median nerve
B. Ulnar nerve
C. Radial nerve
D. Musculocutaneous nerve
✅ Answer: A – Median nerve

25. The functional position of the hand involves:

A. Full extension
B. Full flexion
C. Slight wrist extension + MCP flexion + IP extension
D. Full supination
✅ Answer: C – Slight wrist extension with MCP flexion and IP extension

✅ Exam Tip Summary

Median nerve → Carpal tunnel.
Ulnar nerve → Guyon’s canal.
Radial artery → Deep palmar arch.
Ulnar artery → Superficial palmar arch.
Posterior interosseous nerve → All deep extensors.

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