Answer:
autonomic nervous system.
Explanation:
Autonomic nervous system -
It is the portion of the peripheral nervous system , which produces the smooth gland and muscle , and effect the functions of the internal organs .
The autonomic nervous system controls and regulates the urination , pupillary response , respiratory rate , digestion and heart rate .
It is the main mechanism for the fight - or flight response.
Hence , from the given information of the question,
The correct term is autonomic nervous system .
