Fiveable
Fiveable

antagonist

Definition

In the muscular system, an antagonist muscle acts in opposition to the action of a specific agonist muscle, relaxing and yielding while the agonist contracts. This coordinated action allows for smooth and controlled movements.

Analogy

Consider a game of tug-of-war where one team pulls the rope towards themselves while the opposing team resists by pulling in the opposite direction; similarly, an antagonist muscle works by resisting the action of an agonist muscle to ensure movements are balanced and precise.

Related terms

Agonist: A muscle that contracts to create movement when it shortens, working against an antagonist muscle.

Synergist: A muscle that assists the agonist in performing its action, often by providing additional force or by stabilizing joints.

Muscle Tone: The continuous and passive partial contraction of muscles or their resistance to passive stretching during resting state

collegeable - rocket pep

Are you a college student?

  • Study guides for the entire semester

  • 200k practice questions

  • Glossary of 50k key terms - memorize important vocab



© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.


© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.