GENERAL HISTOLOGY

Detailed explanation-1: -A set of antagonists called the hamstrings in the posterior compartment of the thigh are activated to slow or stop the movement. These terms are reversed for the opposite action, flexion of the leg at the knee.

Detailed explanation-2: -The most common example of antagonistic muscles are the biceps and the triceps. As the agonist muscle contracts, the antagonist relaxes, helping to manage and regulate the movement of the former.

Detailed explanation-3: -Fixator: The fixator in a movement is the muscle(s) that stabilises the origin of the agonist and the joint that the origin spans (moves over) in order to help the agonist function most effectively.