Beginner Abductor Pollicis Longus Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. In which compartment of the forearm is abductor pollicis longus located?
- Thenar compartment
- Posterior compartment
- Hypothenar compartment
- Anterior compartment
Q2. Abductor pollicis longus belongs to which muscular layer of the posterior forearm?
- Superficial flexor layer
- Intermediate anterior layer
- Deep layer
- Superficial layer
Q3. Which bones provide proximal attachment for abductor pollicis longus?
- Humerus and radius
- Humerus and ulna
- Scaphoid and trapezium
- Radius and ulna
Q4. Which fibrous structure also provides origin for abductor pollicis longus?
- Annular ligament only
- Palmar aponeurosis
- Interosseous membrane
- Flexor retinaculum
Q5. Where does abductor pollicis longus primarily insert?
- Proximal phalanx of the little finger
- Base of the first metacarpal
- Base of the second metacarpal
- Distal phalanx of the thumb
Q6. What is the primary action of abductor pollicis longus on the thumb?
- Interphalangeal extension
- Abduction
- Interphalangeal flexion
- Adduction
Q7. Which nerve directly supplies abductor pollicis longus?
- Posterior interosseous nerve
- Median nerve
- Anterior interosseous nerve
- Ulnar nerve
Q8. The posterior interosseous nerve is derived from which major nerve?
- Median nerve
- Musculocutaneous nerve
- Radial nerve
- Ulnar nerve
Q9. Abductor pollicis longus acts primarily on which digit?
- Thumb
- Middle finger
- Index finger
- Little finger
Q10. In addition to abducting the thumb, abductor pollicis longus can assist which thumb movement?
- Extension at the carpometacarpal joint
- Flexion at the interphalangeal joint
- Adduction toward the palm
- Flexion of the distal phalanx