| extrasystole | (noun) a premature systole resulting in a momentary cardiac arrhythmia | - |
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| extrasystolic | (adjective) of or relating to or happening during an extrasystole | - |
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| idiosyncrasy | (noun) a behavioral attribute that is distinctive and peculiar to an individual | Synonyms: foible, mannerism |
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| parasympathetic | (adjective) of or relating to the parasympathetic nervous system | - |
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| (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 | Synonyms: parasympathetic nervous system |
| parasympathomimetic | (adjective) having an effect similar to that resulting from stimulation of the parasympathetic nervous system | - |
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