Jisho

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ふくこうかんしんけいけい 副交感神経系
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Noun
1. parasympathetic nervous system; PSNS​Anatomy
Wikipedia definition
2. Parasympathetic nervous system​The parasympathetic nervous system (PSNS, or occasionally PNS) is one of the two main divisions of the autonomic nervous system (ANS). The ANS is responsible for regulation of internal organs and glands, which occurs unconsciously. To be specific, the parasympathetic system is responsible for stimulation of "rest-and-digest" activities that occur when the body is at rest, including sexual arousal, salivation, lacrimation (tears), urination, digestion, and defecation.
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