The central nervous system comprises the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.
Answer:
a social smile
Explanation:
beause smile make people friendly and happy mode so any thinks can do.
This is called transient vascular shock.
The heat caused his cutaneous blood vessels to dilate, which increased the blood volume in his legs. The increase of blood volume in the legs creates a decrease in blood flow which causes a decrease in blood pressure. The light-headed and fainting are due to the brain was not receiving enough blood flow.