4. Autonomic Nervous System – i

Now this is the new chapter ANS. So previously we study about Central nervous system. After this I will give some questions to you it will be helpful for you.

The autonomic nervous system regulates a variety of body process that takes place without conscious effort. The autonomic system is the part of the peripheral nervous system that is responsible for regulating involuntary body functions, such as heartbeat, blood flow, breathing, and digestion.
The sympathetic division of the autonomic nervous system regulates the flight-or-fight responses. This division also performs such tasks as relaxing the bladder, speeding up heart rate, and dilating eye pupils.
The parasympathetic division of the autonomic nervous system helps maintain normal body functions and conserves physical resources. This division also performs such tasks as controlling the bladder, slowing down heart rate, and constricting eye pupils.
The autonomic nervous system is also made up of a third component known as the enteric nervous system, which is confined to the gastrointestinal tract.
The autonomic system controls a variety of internal processes including:1

Digestion
Blood pressure
Heart rate
Urination and defecation
Pupillary response
Breathing (respiratory) rate
Sexual response
Body temperature
Metabolism
Electrolyte balance
Production of body fluids including sweat and saliva
Emotional responses

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