Answer and Explanation:
There are four major roles of muscles that provide the movement that are given bellow.
AGONIST : They are also known as prime movers it provides force to complete the movement.
example : flexion of elbow
ANTAGONIST : They oppose the movement which was produced by agonist
example : extension of elbow by triceps
NOTE : They also slows down the movements
SYNERGISTS : Their main role is to stabilize the joint in which moment take place they also help in performing the movement to agonist.
FIXATORS : Their main role is to stabilize the origin of agonists and stabilize the joint
example : Rotator cuff muscles
