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

Question

Quizplus · Accepted Answer

Eccentric muscle actions occur when a muscle lengthens under tension, often to control or slow down a movement. In this case, if the muscle's primary action is to elevate the angle of the mouth, its eccentric function would be to control or slow down the opposite movement, which is the depression of the angle of the mouth.

What Is the Eccentric Function of a Muscle Whose Mover