What is the function of the antagonist muscle?

The function of the antagonist muscle is to oppose the action of the agonist. In any coordinated movement, there are usually pairs of muscles that work together to facilitate movement. The agonist is the primary muscle responsible for a particular movement, while the antagonist serves to counterbalance and control that movement.

For instance, when you flex your elbow by contracting your bicep (the agonist), the tricep acts as the antagonist, relaxing in opposition to the bicep's contraction. This relationship allows for smooth and controlled movements as the antagonist helps prevent the agonist from overextending or exerting too much force, ensuring stability and coordination in physical actions. Thus, the role of the antagonist is crucial for maintaining balance and proper function during movement.