Question

28. What happens when :
(a) your biceps muscle contracts ?
(b) your triceps muscle contracts ?​

Answer 1

Answer:

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Answer 2

Answer:

I Hope it helps you .

Explanation:

Each muscle in the pair works against the other to move bones at the joints of the body . The muscle that contracts to cause a joint to bend is called the flexor . The biceps and triceps act against one another to bend and straighten the elbow joint . To bend the elbow , the biceps contracts and  triceps relaxes .