Tammy puts one toe into the swimming pool and shivers because the water is so cold. She grits her teeth and dives in anyway. After about ten minutes in the water, the temperature seems quite comfortable to her. This example illustrates the principle of:

answer; 60-100; beats per minute

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.