MUSCLE PHYSIOLOGY

Detailed explanation-1: -Muscles that work like this are called antagonist ic pairs. In an antagonistic muscle pair as one muscle contracts the other muscle relaxes or lengthens. The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist.

Detailed explanation-2: -Antagonistic muscles are those muscles which produce movements in an antagonistic pair of muscles by opposing the movement of the agonistic muscle . i.e. when one contacts the other relaxes and vice versa. Example-biceps and triceps, quadriceps and hamstrings.

Detailed explanation-3: -pairs of muscles (or muscle groups) that oppose each other in function. For example, the biceps flexes the arm at the elbow, whereas the opposing triceps straightens the arm.