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A : Elevated levels of Na^(+) increases...

A : Elevated levels of `Na^(+)` increases the heart rate and contractility.
R : Elevated `Na^(+)` level increase the excitability of SA node.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

C

If Assertion is true statement but Reason is false, then mark (3).

D

If both Assertion and Reason are false statements, then mark (4).

Text Solution

Verified by Experts

The correct Answer is:
D
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