Jill thought she saw a bear in the woods Her heart rate became elevated, her pupils dilated and she ran in the opposite direction before even thinking about it Now that she is safe inside her cabin. Jill's heart rate has slowed her blood pressure has lowered and her pupils have returned to normal. This process of returning to homeostasis is regulated by the A. Sympathetic nervous system
B. Parasympathetic nervous system
C. Somatic nervous system
D. Central nervous system