What is the eccentric function of a muscle whose mover action is to elevate the upper lip?
A)restrain/slow elevation of the lower lip
B)restrain/slow depression of the upper lip
C)restrain/slow depression of the lower lip
D)restrain/slow eversion of the upper lip

Question

Quizplus · Accepted Answer

The eccentric function of a muscle whose mover action is to elevate the upper lip would be to restrain or slow down the depression of the upper lip. This is because eccentric contractions occur when a muscle is lengthening while still under tension, and in this case, the muscle would need to activate to slow down the movement of the upper lip as it is being lowered.

What Is the Eccentric Function of a Muscle Whose Mover