Upper Limb

Question 1

The deltoid muscle primarily acts to produce what movement?

Answer 1

abduction of the arm (beyond the initial 15 degrees achieved by the supraspinatus)

Question 2

damage to what causes a mallet deformity?

Answer 2

insertion of terminal extensor digitorum tendon

Question 3

the triceps brachi muscle acts to perform what movement?

Answer 3

extension of the forearm

Question 4

the anterior muscles of the arm are innervated by which nerve?

Answer 4

musculocutaneous nerve