Question

When the biceps brachii contracts, the lower arm extends.
a. True
b. False?

Answer 1

The answer is FALSE. The biceps muscle is located in the inner portion of the upper arm while the triceps muscle is located at the outer portion of the arm. To straighten your arm again, you relax the biceps brachii and contract the triceps brachii. Contracting the biceps makes the elbows bend