After discovering that the shadows outside his window were only the trees in the yard, Ralph's blood pressure decreased and his heartbeat slowed. These physical reactions were most directly regulated by his

Question

Quizplus · Accepted Answer

The parasympathetic nervous system is responsible for regulating the body's rest and digest responses, which include decreasing blood pressure and slowing the heartbeat. This is the opposite of the fight or flight response, which is regulated by the sympathetic nervous system, and involves increased heart rate and blood pressure. The somatic nervous system is responsible for voluntary movements, and the hippocampus is involved in memory processing. Therefore, the best choice is A) parasympathetic nervous system.

After Discovering That the Shadows Outside His Window Were Only