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Question 1

What are the interossei muscles, and where are they located?

Answer 1

The interossei muscles are located in separate interosseous compartments between the metacarpals, aiding in finger adduction and abduction.

Question 2

Which muscles control thumb extension?

Answer 2

The muscles controlling thumb extension are the

1. (EPL) extensor pollicis longus
2. (EPB) extensor pollicis brevis
3. (APL) abductor pollicis longus.

Question 3

Which muscles are responsible for thumb flexion?

Answer 3

1. (FPL) flexor pollicis longus
2. (FPB) flexor pollicis brevis

Question 4

What muscles are involved in thumb abduction?

Answer 4

Thumb abduction involves the

1. (APL) abductor pollicis longus
2. (APB) abductor pollicis brevis.