MEDICAL PHYSIOLOGY

Detailed explanation-1: -A fixator muscle is one that serves as a stabilizer of one part of the body during movement of another part. It allows the agonist muscle to work effectively by stabilizing the origin of the agonist muscle so that the latter can pull against the bone without it moving thereby achieve an effective contraction.

Detailed explanation-2: -Fixator = A muscle which acts as the stabilizer and helps the agonist work effectively of one part of the body during movement of another part. The deltoid helps stabilize the bicep during a bicep curl.

Detailed explanation-3: -The muscle primarily responsible for a movement is called the prime mover, and muscles that assist in this action are called synergists. A synergist that makes the insertion site more stable is called a fixator. Meanwhile, a muscle with the opposite action of the prime mover is called an antagonist.

Detailed explanation-4: -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.

Detailed explanation-5: -Prime movers and antagonist The prime mover, sometimes called the agonist, is the muscle that provides the primary force driving the action.