True or False: The biceps are considered antagonist muscles.

The biceps are primarily categorized as agonist muscles rather than antagonist muscles. Agonist muscles are those that contract to bring about movement, and in the case of the biceps, they are responsible for flexing the elbow and lifting the forearm towards the shoulder.

Antagonist muscles serve as opposers to the agonist muscles, helping to control and balance movements. In the case of elbow flexion, the triceps are the antagonists to the biceps; they relax while the biceps contract. Thus, in the context of common actions involving the biceps, they are not considered antagonist muscles.

Considering this information, the statement that the biceps are antagonist muscles is false, and therefore, the appropriate answer is that the biceps are not antagonist muscles.