NEETZoologyBody Fluids and Circulation
What can autonomic nervous system do to the cardiac function?
Options
- ANothing
- BIncrease it
- CDecrease it
- DModify it
Correct answer
D. Modify it
Step-by-step solution
Normal activities of the heart are regulated intrinsically, i.e., auto regulated by specialised muscles (nodal tissue), hence the heart is called myogenic . A special neural centre in the medulla oblangata can moderate the cardiac function through autonomic nervous system (ANS). Neural signals through the sympathetic nerves (part of ANS) can increase the rate of heart beat, the strength of ventricular contraction and thereby the cardiac output. On the other hand, parasympathetic neural signals (another component of