System, parasympathetic nervous
: A part of nervous system that slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles. The parasympathetic nervous system together with the sympathetic nervous system (that accelerates the heart rate, constricts blood vessels, and raises blood pressure) constitute the autonomic nervous system.

Medical dictionary. 2011.

Look at other dictionaries:

  • System, autonomic nervous — Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic nervous system regulates key functions of the body including the activity of the heart muscle (see below), the smooth muscles (e.g., the… …   Medical dictionary

  • System, sympathetic nervous — A part of nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. The sympathetic nervous system together with the parasympathetic nervous system (that slows the heart rate, increases intestinal and… …   Medical dictionary

  • Parasympathetic nervous system — A part of nervous system that serves to slow the heart rate, increase the intestinal and gland activity, and relax the sphincter muscles. The parasympathetic nervous system, together with the sympathetic nervous system (that accelerates the heart …   Medical dictionary

  • Parasympathetic nervous system — The parasympathetic nervous system (PSNS) is a division of the autonomic nervous system (ANS), along with the sympathetic nervous system (SNS) and enteric nervous system (ENS or bowels NS ). The ANS is a subdivision of the peripheral nervous… …   Wikipedia

  • Nervous system, parasympathetic — A part of the nervous system that slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles. The parasympathetic nervous system together with the sympathetic nervous system (that accelerates the heart rate,… …   Medical dictionary

  • parasympathetic nervous system — noun One of the divisions of the autonomic nervous system, based between the brain and the spinal cord, that slows the heart and relaxes muscles. See Also: central nervous system, enteric nervous system, sympathetic nervous system …   Wiktionary

  • parasympathetic nervous system — noun originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels • Syn:… …   Useful english dictionary

  • parasympathetic nervous system — One of the two divisions of the vertebrate autonomic nervous sytem. Parasympathetic nerves emerge cranially as pre ganglionic fibres from oculomotor, facial, glossopharyngeal and vagus, and from the sacral region of the spinal cord. Most neurons… …   Dictionary of molecular biology

  • parasympathetic nervous system — one of the two divisions of the autonomic nervous system, having fibres that leave the central nervous system from the brain and the lower portion of the spinal cord and are distributed to blood vessels, glands, and the majority of internal… …   Medical dictionary

  • parasympathetic nervous system — one of the two divisions of the autonomic nervous system, having fibres that leave the central nervous system from the brain and the lower portion of the spinal cord and are distributed to blood vessels, glands, and the majority of internal… …   The new mediacal dictionary

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