muscles having opposite effects; the contraction of one neutralizes the contraction of the other.

Agents that competitively bind with the binding sites of agonists and thereby inhibit the agonist's actions.

Molecules that prevent activation of receptors in tissues. See ligand, agonist.

a muscle that acts in opposition to an agonist or prime mover.

a ligand which binds to the receptor but does not produce a response

Portions of muscles or whole muscles that, due to the way they are attached anatomically, contribute force to oppose each other.

drugs that prevent or inhibit cell functions

muscles that work together with prime mover to control movement at joint. As prime mover contracts, antagonist relaxes.