Which of the following is a function of the rotator cuff during shoulder girdle elevation?
a. Functions with the deltoid to produce a superior translation of the humeral head during shoulder girdle elevation
b. Produces scapular upward rotation during shoulder girdle motion
c. Balances the deltoid activity by providing a slight inferior translatory force of the humeral head during shoulder girdle elevation
d. Produces downward rotation of the scapula during shoulder girdle motion
ANS: C
The muscles of the rotator cuff primarily work to produce an inferior pull on the head of the humerus. This balances the primarily superior translation of the deltoid muscle.
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