How do the signals from the parasympathetic n | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The parasympathetic nervous system is part of the autonomic nervous system that acts to 'rest and digest'.In the context of the heart,the parasymp

Vedclass · Accepted Answer

Decrease the heart rate and the cardiac output.

Vedclass · Answer

(A) The parasympathetic nervous system is part of the autonomic nervous system that acts to 'rest and digest'.In the context of the heart,the parasympathetic nervous system (via the vagus nerve) releases acetylcholine.This neurotransmitter binds to receptors on the heart,which leads to a decrease in the heart rate.Additionally,it reduces the force of contraction,thereby decreasing the cardiac output (the volume of blood pumped by the heart per minute).Therefore,both the heart rate and the cardiac output are decreased.

How do the signals from the parasympathetic nervous system affect the heart?

Similar Questions

Assertion $(A) :-$ Parasympathetic neural signals decrease the cardiac output.
Reason $(R) :-$ Parasympathetic neural signals decrease the rate of heartbeat and the speed of conduction of action potentials.

When a normal man's heart is injected with a physiological concentration of adrenaline,it causes:

An increase in blood flow to the atria of the heart can cause the release of ............ and it causes ............ in blood vessels.

Fall in blood pressure due to loss of blood is soon restored because the

Vedclass Test Series

Exam Paper Generator

Online Exam Module