Muscles acting on thumb

Question 1

Abductor pollicis longus location and A?

Answer 1

Posterior hand, most lateral. Abduct and extend thumb, radial deviation.

Question 2

Extensor pollicis brevis location and A?

Answer 2

Posterior hand, medial to abductor pollicis longus. Extend thumb at carpometacarpal, metacarpophalangeal and interphalangeal joints,

Question 3

Extensor pollicis longus location and A?

Answer 3

Most medial. Extend thumb at carpometacarpal, metacarpophalangeal and interphalangeal joints,

Question 4

What muscles make up the anatomical snuff box?

Answer 4

Abductor pollicis longus, extensor pollicis longus and brevis.