parasympathetic(redirected from parasympathetic cholinergic vasodilator fibers)
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Of, relating to, or affecting the parasympathetic nervous system: parasympathetic activity; parasympathetic agents.
1. The parasympathetic nervous system.
2. Any of the nerves of this system.
1. (Anatomy) anatomy physiol of or relating to the division of the autonomic nervous system that acts in opposition to the sympathetic system by slowing the heartbeat, constricting the bronchi of the lungs, stimulating the smooth muscles of the digestive tract, etc. Compare sympathetic4
2. (Physiology) anatomy physiol of or relating to the division of the autonomic nervous system that acts in opposition to the sympathetic system by slowing the heartbeat, constricting the bronchi of the lungs, stimulating the smooth muscles of the digestive tract, etc. Compare sympathetic4
par•a•sym•pa•thet•ic(ˌpær əˌsɪm pəˈθɛt ɪk)
pertaining to that part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions and generally function in regulatory opposition to the sympathetic system, as in slowing heartbeat or contracting the pupil of the eye.
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|Noun||1.||parasympathetic - 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
|Adj.||1.||parasympathetic - of or relating to the parasympathetic nervous system|
a. parasimpático, rel. a una de las dos ramas del sistema nervioso autónomo;
___ nervous system → sistema nervioso autónomo.