APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -For example, when you perform a bicep curl the biceps will be the agonist as it contracts to produce the movement, while the triceps will be the antagonist as it relaxes to allow the movement to occur.

Detailed explanation-2: -Biceps & Triceps To recap, as we flex (or curl) our arm, the bicep functions as the agonist muscle during its contraction, whereas the tricep is the antagonist muscle, as it relaxes. As we uncurl or relax our arm, these roles are reversed, with the bicep becoming the antagonist, and the tricep the agonist muscle.

Detailed explanation-3: -Flexing of the forearm by the biceps brachii: The biceps brachii is the agonist, or primer mover, responsible for flexing the forearm. The triceps brachii (not shown) acts as the antagonist.

Detailed explanation-4: -Antagonistic Muscle is a muscle that opposes the action of another. For example, when the triceps oppose the contraction of the flexing biceps by relaxing, the triceps would be regarded as the antagonistic muscle to the biceps whereas the biceps, the agonist muscle.