parasympathetic nervous system

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parasympathetic nervous system

n.
The part of the autonomic nervous system originating in the brainstem and the lower part of the spinal cord that, in general, inhibits or opposes the physiological effects of the sympathetic nervous system, as in tending to stimulate digestive secretions, slow the heart, constrict the pupils, and dilate blood vessels.

par·a·sym·pa·thet·ic nervous system

(păr′ə-sĭm′pə-thĕt′ĭk)
The part of the autonomic nervous system that tends to act in opposition to the sympathetic nervous system, as by slowing down the heart and dilating the blood vessels. It also regulates the function of many glands, such as those that produce tears and saliva.

parasympathetic nervous system

The part of the autonomic nervous system that controls rest and digestion.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.parasympathetic nervous system - 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
nervous system, systema nervosum - the sensory and control apparatus consisting of a network of nerve cells
ANS, autonomic nervous system - the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
Translations
parasympatická nervová soustava
parasympaattinen hermostoparasympatikus
References in periodicals archive ?
11] In addition, NPY can regulate the release of neurotransmitters by acting on the Y2 receptor on the presynaptic membrane of both sympathetic and parasympathetic nerve fibers, which may play a crucial role in HR regulation.
The researchers measured heart rate variability while the volunteers engaged in controlled breathing (12 breaths/min for 1 minute), rested in a tilted, 70-degree head-up position (4 minutes), and engaged in a cold pressor test (CPT) during which a lower arm was immersed in ice-cold water (2 minutes): "Controlled breathing stimulates parasympathetic nerve activity, whereas tilting and CPT stimulate sympathetic nerve activity.
It does have variations which will introduce possible non-linear effects of varying cardiac sympathetic and cardiac parasympathetic nerve activity on LF/HF, MSE parameters.
Parasympathetic nerve supply from superior salivatory nucleus via vidian nerve and sympathetic nerve supply from superior cervical chain.
This is because the "flashed" areas are where the parasympathetic nerve passes which is directly connected to the Meibomian gland, thus naturally ensuring the natural flow of lipid and reducing tear evaporation.
6] Nerve supply to the sweat glands in the body is sympathetic cholinergic except to the sweat glands on palms of the hands, which is supplied by the parasympathetic nerve.
3) Effect of Kidsolone on electrically induced contractions - electrical stimulation of this tissue causes parasympathetic nerve remnants in the trachea to release the transmitter acetylcholine.
The extensive nerve network in the submucosa contains visceral sensory fibers mainly of sympathetic origin, parasympathetic (terminal) ganglia, and preganglionic and postganglionic parasympathetic nerve fibers.
Innervation of blood vessels is carried out from two sources, the autonomic nervous system--the sympathetic and parasympathetic nerve fibers of the spinal and bulbar origin.
Heart rate variability (HRV) refers to the beat-to-beat variation in heart rate generated by the interplay of sympathetic and parasympathetic nerve activity at the sinus node of the heart.
ligate or reroute salivary gland ducts, or interrupt parasympathetic nerve supply to glands.

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