Question

when you bend your arm ,the biceps that are joined to the arm in front __________.​

Answer 1

Explanation:

The muscle that contracts to cause the joint to straighten is called the extensor. ... The biceps and triceps act against one another to bend and straighten the elbow joint. To bend the elbow, the biceps contracts and the triceps relaxes. To straighten the elbow, the triceps contract and the biceps relax.