Question

Assertion : Triceps is said to be an extensor muscle for elbow joint
Reason : Triceps relaxes during extension of forearm at the elbow joint

• A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
• C. If the assertion is true but the reason is false
• D. If both the assertion and reason are false
• E. If the assertion is false but reason is true

Answer 1

The correct option is C If the assertion is true but the reason is false

Movements are produced at joints by contraction of skeletal muscles inserted into articulating bones. The contraction of an extensor muscle extends a joint,
hence causing extension of the limb. Contraction of triceps brings about the extension of forearm at the elbow joint hence it is said to be the extensor muscle for elbow joint.