NEET 2014 Biology question

How do parasympathetic neural signals affect the working of the heart?

(1)Reduce both heart rate and cardiac outputCorrect
(2)Heart rate is increased without affecting the cardiac output
(3)Both heart rate and cardiac output increase
(4)Heart rate decreases but cardiac output increases

Answer: (1)

Solution

The autonomic nervous system regulates cardiac activity. Sympathetic (neural) signals increase the rate of heartbeat, the strength of ventricular contraction and hence the cardiac output; parasympathetic signals (via the

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-091625