Home
Class 12
BIOLOGY
If neural signals are sent through the p...

If neural signals are sent through the parasympathetic nerves of the ANS, the heart rate will

A

decreases

B

increases

C

show no change

D

first decreases then increase

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

If parasympathetic nerve of the rabbit is cut then heart beat

Which of the following statement is CORRECT ? I. Heart, the mesodermally derived organ, is situated in the thoracic cavity, in between the two lungs , slightly tilted to the left. II. During joint diastole , tricuspid and bicuspid valves are open and the semilunar values are closed. III. The first heart sound (lub) is associated with the closure of the tricuspid and biscuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves . IV. Neural signals through the sympathetic nerves can increases the rate of hearbeat, the strength of ventricular contraction and thereby the cardiac output.

Parasympathetic stimulation of the heart

What is heart rate ?

In children , heart rate is :-

The vagus nerve reduces the heart rate.

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

How do parasympathertic neural signals affect the working the heart

Distinguish between the following pairs : Effects of sympathetic and parasympathetic nerves on the heart, pupil, blood vessels and blood pressure

What happens if the sympathetic nerve supply to the heart is cut off?