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2015-07-24T15:40:08+08:00

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A part of the vertebrate nervous system that innervates smooth and cardiac muscle and glandular tissues and governs involuntary actions and that consist of symphatetic nervous system and the parasympathetic nervous system.
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2015-07-24T20:22:13+08:00

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The autonomic nervous system (ANS) regulates the functions of our internal organs (the viscera) such as the heart, stomach and intestines. The ANS is part of the peripheral nervous system and it also controls some of the muscles within the body. We are often unaware of the ANS because it functions involuntary and reflexively. For example, we do not notice when blood vessels change size or when our heart beats faster. However, some people can be trained to control some functions of the ANS such as heart rate or blood pressure.
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