Completar frases Parasympathetic vs SympatheticVersión en línea Dinstinguish Parasympathetic from Sympathetic by filling in the correct word. por Jada Hall 1 parasympathetic parasympathetic constrict sympathetic autonomic releases sympathetic increases decreases Sympathetic two The nervous system is divided into parts and sympathetic . system controls the fight or flight responses . While the system controls the rest and digest responses . When your pupils dilate , and your sweat starts to increase this means your system is at work . You're hiking and see a bear just feet away from you . Your body tenses up and you feel your heart beating vigorously your system is in control . When your liver glucose to provide more energy , this is the sympathetic system at work . When your saliva and blood flows to the gut the parasympathetic system is activated . When you're outside enjoying nature hearing the birds chirp and the water running from the stream your pupils and your heart rate your parasympathetic system is at work .