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  • When considering the activity moderated by the autonomous neural system, select the accurate statement among the following options:  Optio

When considering the activity moderated by the autonomous neural system, select the accurate statement among the following options:


 

Option: 1

The parasympathetic system exhibits stimulatory effects on heart rate and stroke volume.


Option: 2

The sympathetic system exhibits stimulatory effects on heart rate and stroke volume.


Option: 3

The parasympathetic system causes a decrease in heart rate but an increase in stroke volume.

 


Option: 4

The sympathetic system causes a decrease in heart rate but an increase in stroke volume.


Answers (1)

best_answer

The sympathetic system, one of the divisions of the autonomic nervous system, stimulates both heart rate and stroke volume. It is responsible for the "fight or flight" response and increases physiological activity. By enhancing the rate of depolarization in the heart's pacemaker cells and boosting the force of contraction in the cardiac muscle, the sympathetic system leads to higher heart rate and stroke volume. In contrast, the parasympathetic system, associated with the "rest and digest" response, slows down heart rate but has minimal impact on stroke volume.

Hence, the correct answer is option 2. 

Posted by

Kuldeep Maurya

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