Which of the following statements is true about... - WAEC Biology 2005 Question
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 option: b
To bend the arm, the biceps contracts and pulls on the radius. Simultaneously, the triceps relaxes.
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