Answer :
The parasympathetic nervous system and sympathetic nervous system are responsible for heart rate increasing and mouth going dry.
What is Autonomic nervous system?
This is a part of the peripheral nervous system that regulates involuntary physiologic processes.
It is divided into two parts namely:
- Parasympathetic nervous system
- Sympathetic nervous system
They are responsible for involuntary actions which are mentioned above.
Read more about Autonomic nervous system here https://brainly.com/question/4143211