Question

Muscles of which part of your arm contracted and relaxed during the above three actions ?​

Answer 1

Answer:

For example, the biceps muscle, in the front of the upper arm, is a flexor, and the triceps, at the back of the upper arm, is an extensor. When you bend at your elbow, the biceps contracts. Then the biceps relaxes and the triceps contracts to straighten the elbow.

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