Which of the following statements is true about movement of the forearm? In
BIOLOGY
WAEC 2005
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: B. bending the arm, the biceps contract and the triceps relax
Explanation
To bend the arm, the biceps contracts and pulls on the radius. Simultaneously, the triceps relaxes.
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