Which of the following statements is true about movement of the forearm? In
-
A.
bending the arm, the biceps relax and the triceps contract -
B.
bending the arm, the biceps contract and the triceps relax -
C.
straightening the arm the biceps contract and the triceps relax -
D.
straightening the arm, both biceps and triceps contract
Correct Answer: Option B
Explanation
To bend the arm, the biceps contracts and pulls on the radius. Simultaneously, the triceps relaxes.