In a bicep curl, which muscle acts as the antagonist?

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Multiple Choice

In a bicep curl, which muscle acts as the antagonist?

Explanation:
When you perform a bicep curl, the elbow bends because the biceps brachii is pulling the forearm up, making it the muscle doing the main work (the mover). The opposing muscle that slows down or reverses that action is the triceps brachii. It straightens the elbow, so during the curl it lengthens to control the movement, especially on the way down. The deltoid and latissimus dorsi aren’t directly opposing elbow flexion in this movement; they mainly assist shoulder actions, not the elbow bend being produced here.

When you perform a bicep curl, the elbow bends because the biceps brachii is pulling the forearm up, making it the muscle doing the main work (the mover). The opposing muscle that slows down or reverses that action is the triceps brachii. It straightens the elbow, so during the curl it lengthens to control the movement, especially on the way down. The deltoid and latissimus dorsi aren’t directly opposing elbow flexion in this movement; they mainly assist shoulder actions, not the elbow bend being produced here.

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