The muscle that causes an action is the
A)synergist.
B)antagonist.
C)agonist.
D)mediator.

Question

The muscle that causes an action is the
A)synergist.
B)antagonist.
C)agonist.
D)mediator.

Quizplus · Accepted Answer

The agonist muscle is the muscle that contracts to cause a specific movement or action. It is sometimes referred to as the 'prime mover' because it is primarily responsible for producing the movement. The antagonist muscle works in opposition to the agonist to regulate and control the movement. The synergist muscles assist the agonist in producing the movement. Mediator is not a commonly used term in muscle physiology.

The Muscle That Causes an Action Is the