Definition of autonomic nervous system Autonomic nervous system
au•to•nom•ic nerv•ous sys•tem
We found 4 definitions of autonomic nervous system from 4 different sources.
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What does autonomic nervous system mean?
WordNet
Noun |
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| autonomic nervous system - the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands | ||
| ANS | ||
| neural structure a structure that is part of the nervous system | ||
| nervous system, systema nervosum the sensory and control apparatus consisting of a network of nerve cells | ||
| autonomic ganglion any of the ganglia of the autonomic system whose unmyelinated fibers innervate the internal organs | ||
| sympathetic nervous system originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels | ||
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Wiktionary 
- autonomic nervous system (Noun)
In humans and other vertebrates, the part of the nervous system that regulates the involuntary activity of the heart, intestines and glands. These activities include digestion, respiration, perspiration, metabolism, and the modulation of blood pressure .
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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autonomic nervous system
Nerves that control involuntary muscles.
Wikipedia 
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The autonomic nervous system (ANS) (or visceral nervous system) is the part of the peripheral nervous system that controls the body's internal state.
Most of these activities are performed without conscious control or sensation, but some work together with the conscious mind, such as breathing. The ANS has far reaching effects, including: heart rate, digestion, respiration rate, salivation, perspiration, diameter of the pupils, the discharge of urine, and erection.
The ANS is divided into two limbs, the parasympathetic nervous system which is primarily involved in relexation, and the sympathetic nervous system which causes the body to become more active as in the "fight or flight" response.
