parasympathetic nervous system
- parasympathetic nervous system
- noun Date: circa 1934 the part of the autonomic nervous system that contains chiefly cholinergic fibers, that tends to induce secretion, to increase the tone and contractility of smooth muscle, and to slow heart rate, and that consists of a cranial and a sacral part — compare sympathetic nervous system
New Collegiate Dictionary. 2001.
Look at other dictionaries:
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
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 — 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
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,… … Medical dictionary
sympathetic nervous system — noun Date: 1850 the part of the autonomic nervous system that contains chiefly adrenergic fibers and tends to depress secretion, decrease the tone and contractility of smooth muscle, and increase heart rate compare parasympathetic nervous system … New Collegiate Dictionary
Autonomic nervous system — The autonomic nervous system Blue = parasympathetic Red = sympathetic Latin divisio autonomica systematis nervosi peripherici The autonomic nervous system (ANS or visceral nervous syste … Wikipedia
autonomic nervous system — the system of nerves and ganglia that innervates the blood vessels, heart, smooth muscles, viscera, and glands and controls their involuntary functions, consisting of sympathetic and parasympathetic portions. [1895 1900] * * * Part of the nervous … Universalium
Sympathetic nervous system — Infobox Anatomy Name = Sympathetic nervous system Caption = The sympathetic nervous system extends from the thoracic to lumbar vertebrae and has connections with the thoracic, abdominal, and pelvic plexuses. Mesh = Sympathetic+Nervous+SystemThe… … Wikipedia
Peripheral nervous system — The peripheral nervous system (PNS) resides or extends outside the central nervous system (CNS), which consists of the brain and spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs. Unlike the central nervous… … Wikipedia
