Muscles of the Forearm Quiz

1. A movement combines wrist flexion with deviation toward the little-finger side. Which muscle is best positioned to produce both actions?

2. During resisted wrist extension, the hand also moves toward the thumb side. Which muscles are chiefly producing this combined action?

3. Pain near the lateral epicondyle is aggravated by resisted wrist extension. Which shared attachment is most relevant?

4. Which muscle would be tested by asking someone to flex the interphalangeal joint of the thumb against resistance?

5. Which muscle belongs to the superficial layer of the anterior forearm compartment?

6. An anterior interosseous nerve injury can weaken a tip-to-tip pinch by affecting which pair of forearm muscles?

7. Which tendon uses the dorsal tubercle of the radius, also called Lister's tubercle, as a pulley before continuing toward the thumb?

8. With the elbow extended, which deep forearm muscle is a primary producer of pronation at the radioulnar joints?

9. Which forearm muscle supinates the forearm without flexing the elbow?

10. An injury to the posterior interosseous nerve would most directly weaken muscles in which region?

11. The common flexor tendon of the superficial anterior forearm muscles originates primarily from which landmark?

12. Which forearm muscle is especially effective at flexing the elbow when the forearm is in a neutral, thumb-up position?

13. Which forearm muscle primarily extends digits 2-5 at the metacarpophalangeal joints?

14. A person cannot actively flex the distal interphalangeal joint of the index finger. Which muscle is most directly affected?

15. Which muscle is NOT part of the deep layer of the anterior forearm compartment?

16. Which muscle inserts at the base of the fifth metacarpal and contributes to wrist extension and ulnar deviation?