Q. With respect to the thenar muscles: (Solved)
1. abductor pollicis brevis inserts into the base of the distal phalanx of the thumb
2. all arise from the flexor retinaculum
3. flexor pollicis brevis is usually supplied by a branch from the ulnar nerve
4. abductor pollicis brevis has no role in opposition of the thumb
5. opponens pollicis is the most superficial muscle of the group
- b. all arise from the flexor retinaculum