Autonomic nervous system
The autonomic nervous system (ANS) controls the conditions inside the body. It is sometimes called the 'visceral nervous system' or 'involuntary nervous system'. The ANS is part of the peripheral nervous system.
ANS controls all automatic actions. That means that it controls all reflexes and actions during sleep.
Most of its activities are done without the person having conscious control over them. The person usually cannot feel what the ANS is doing. However, some of the ANS's activities work together with the conscious mind, like breathing.
There are two different sections within the ANS:
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- Michael D. Gershon 1998. The second brain. HarperCollins, New York.