Thus, the parasympathetic causes slower heart rates and respiratory rates, sleep, increased gastrointestinal track motility, increased peripheral vascular flow, blood flow to all cells, liver and kidneys, and venous return to the heart.

因此，副交感神经引起心率和呼吸频率减慢、睡眠、胃肠运动和周围血流增加、血液流向所有细胞、肝脏和肾脏以及静脉血回流到心脏。