The deltoid acts to
A) flex the wrist.
B) medially rotate the shoulder.
C) abduct the arm.
D) adduct the arm.
E) laterally rotate the shoulder.

Question

Quizplus · Accepted Answer

The deltoid muscle is responsible for abducting the arm, which means lifting the arm away from the body. The other answers are incorrect because the deltoid does not flex the wrist (that's the function of wrist flexor muscles), medially rotate the shoulder (that's the function of the subscapularis muscle), adduct the arm (that's the function of the latissimus dorsi and pectoralis major muscles), or laterally rotate the shoulder (that's the function of the infraspinatus and teres minor muscles).

The Deltoid Acts to