O-LevelBiologyCoordination & Response5090/11 · May/June 2022 · Q261 Mark
What happens when the triceps muscle of the forelimb begins to contract?
AThe biceps muscle begins to relax.
BIt starts to pull the radius bone upwards.
CThe arm becomes bent at the elbow joint.
DThe upper arm is raised above the shoulder.
✓ Correct answer
A: The biceps muscle begins to relax.
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