The parasympathetic nervous system and sympathetic nervous system are responsible for heart rate increasing and mouth going dry.
<h3>What is Autonomic nervous system?</h3>
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 brainly.com/question/4143211
Answer by YourHope:
Hi! ^-^
At what age is a child likely to learn to sit up without support?
I would say Five months if you position the child but Nine months for the baby to sit up by themselves! So the answer is Nine months!
Have a BEAUTIFUL day~