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O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2014 · Q241 Mark

What happens when the arm is straightened at the elbow?

AThe biceps pushes on the radius.
BThe biceps pushes on the ulna.
CThe triceps pulls on the radius.
DThe triceps pulls on the ulna.

✓ Correct answer

D: The triceps pulls on the ulna.

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About this question

Topic
Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2014 Paper 1 Variant 1, question 24.

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