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Assertion : Neutral signals through symp...

Assertion : Neutral signals through sympathetic nerves can increase the strength of ventricular contraction
Reason : Parasympathetic neutral signals synergistically act with sympathetic neutral signal to increase the cardiac output.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
C
Neural signals through the sympathetic nerves (part of ANS) can increase the rate of heart beat, the strength of ventriclar contraction and thereby the cardiac output. On the other hand, parasympathetic neutral signals (another component of ANS) decrease the rate of heart beat, speed of conduction of action potential and thereby the cardiac output.
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