If a Prime Mover Caused Extension,the Antagonist Would Cause Flexion

Question

If a prime mover caused extension,the antagonist would cause flexion.

Accepted Answer

This statement is true. In a pair of antagonistic muscles, when one contracts to cause movement in one direction (agonist), the other muscle in the pair relaxes to allow movement in the opposite direction (antagonist). The prime mover is the muscle responsible for causing the desired movement, while the antagonist is the muscle that opposes this movement and controls the speed and smoothness of the movement.