Beginner Extensor Carpi Radialis Longus Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. In which compartment of the forearm is extensor carpi radialis longus located?
- Hypothenar compartment
- Posterior compartment
- Anterior compartment
- Thenar compartment
Q2. Extensor carpi radialis longus belongs to which layer of the posterior forearm muscles?
- Superficial layer
- Deep layer
- Deep anterior layer
- Intermediate anterior layer
Q3. From which part of the humerus does extensor carpi radialis longus primarily originate?
- Greater tubercle
- Intertubercular sulcus
- Lateral supracondylar ridge
- Medial epicondyle
Q4. On which metacarpal does extensor carpi radialis longus insert?
- Third metacarpal
- Second metacarpal
- First metacarpal
- Fifth metacarpal
Q5. What is a primary action of extensor carpi radialis longus?
- Elbow extension
- Finger flexion
- Wrist flexion
- Wrist extension
Q6. In addition to wrist extension, which movement is produced by extensor carpi radialis longus?
- Radial deviation
- Forearm pronation
- Ulnar deviation
- Thumb opposition
Q7. Which nerve directly supplies extensor carpi radialis longus?
- Ulnar nerve
- Musculocutaneous nerve
- Radial nerve
- Median nerve
Q8. Extensor carpi radialis longus primarily acts across which joint?
- First carpometacarpal joint
- Wrist joint
- Distal interphalangeal joint
- Shoulder joint
Q9. Which muscle works closely with extensor carpi radialis longus to extend and radially deviate the wrist?
- Pronator quadratus
- Extensor carpi radialis brevis
- Flexor carpi ulnaris
- Flexor digitorum profundus
Q10. Which description best identifies the distal attachment of extensor carpi radialis longus?
- Radial styloid process
- Dorsal base of the second metacarpal
- Palmar base of the fifth metacarpal
- Distal phalanx of the thumb