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Why can you bend your arms?

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Anonymous

14y ago
Updated: 8/17/2019

When you bend your arm your brain send signals to your arm muscles telling the biceps, your upper arm muscles, to contract, go taut or stretch, while telling your triceps, lower arm muscles, to relax, become less tense or ease. Both of these muscles act as an antagonistic pair and work together to bend the arm. Each muscle uses the bones in your arm, the Humerus, the ulna and the radius, as an anchor.

MonkeyLover-Dinda

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Wiki User

14y ago

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