wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following statements is correct regarding the neural regulation of cardiac activity?

A
The cardiac centre lies in the medulla oblongata of the brain
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Parasympathetic nerve fibres accelerate the rate of heart beat and
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Sympathetic nerve fibres retard the rate of the heart beat
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
All of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A The cardiac centre lies in the medulla oblongata of the brain
The neural regulation of the cardiac activity is done by a neural centre which is present in the medulla oblangata. The sympathetic and the parasympathetic nervous systems, which are a part of the autonomic nervous system, play an important role in this regulation. The sympathetic nervous system is instrumental in increasing the rate of heart beat and the strength of ventricular contraction. These, in turn, help to increase cardiac output. On the other hand, the parasympathetic nervous system plays an important role in regulation of the cardiac activity by decreasing the speed of conduction of the nerve impulses and the rate of heart beat. These, in turn, help in the reduction of cardiac output.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon