Question

Read the assertion and reason carefully to mark the correct option in question.
Assertion: Tetany is the rapid spasms in muscle.
Reason: Tetany is due to low $C{a}^{2+}$ in body fluid.

Answer 1

Assertion-Reason relation

Tetany is a locomotory disorder which causes wild contractions in the muscles. This may result in spasms, muscle cramps or tremors.
Hence, the given assertion- “Tetany is the rapid spasms in muscle” is correct.

When the concentration of calcium ions decrease in the body, it causes generation of spontaneous action potential. This is because of increased neuromuscular excitability.
This causes wild contractions in the muscles which results in spasms.
Hence, the given reason is true and is the correct explanation of the given assertion.

Final answer: (A) If both assertion and reason are true and the reason is the correct explanation of the assertion.