What are the roles of the parasympathetic and sympathetic nervous systems?

The sympathetic nervous system and parasympathetic nervous systems are both part of the autonomic nervous system. They work together to achieve homeostasis. The sympathetic nervous system primarily activates the 'fight or flight response' it increases heart rate, respiratory rate and sweating. The parasympathetic nervous system balances these actions and acts to reduce heart rate, respiratory rate whilst promoting digestion and urine production which are functions best achieved in the absence of potential stressors or threats.

UB
Answered by Ursula B. Biology tutor

3185 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the process of DNA replication.


What is a Pacinian corpuscle and how does it work?


When is Chi-squared the most appropriate statistical test to use?


What is the difference beween biological species concept and the phylogentic approach to defining species?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning