Assertion : Neural signals through sympathetic nerves can increase the strength of ventricular contr

Question

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

Professor PC Thomas Classes · Answer

(c): Neural signals through the sympathetic nerves (part of ANS) can increase the rate of heartbeat, the strength of ventricular contraction and thereby the cardiac output. On the other hand, parasympathetic neural signals (another component of ANS) decrease the rate of heartbeat, speed of conduction of action potential and thereby the cardiac output.