What is the action of an antagonist muscle during movement?

In the context of muscle movement, the role of an antagonist muscle is essential for providing balance and control. When an agonist muscle contracts to produce movement, the antagonist muscle actively relaxes or opposes this action, allowing for smooth and coordinated movements. This opposing action helps to ensure that movements are performed accurately and with stability, preventing potential injuries that could arise from overextension or uncontrolled motions.

For instance, when you flex your arm, the biceps act as the agonist, contracting to lift the forearm. Meanwhile, the triceps serve as the antagonist, relaxing to allow that flexion to occur. This dynamic interaction between agonist and antagonist muscles is crucial for efficient movement and maintaining proper muscle function throughout various activities.