noun
parasympathetic nerve
Anatomical term for nerves of the parasympathetic nervous system, which controls rest-and-digest functions.
副交感神経が優位になると、心拍数が下がる。
When the parasympathetic nerves become dominant, the heart rate drops.
Compound of 副 (sub-, accessory) + 交感神経 (sympathetic nerve). The term was coined in modern medical terminology to describe the counterpart to the sympathetic nervous system.