A light skinned person who is very cold may have a pale appearance. Which of the following is the best explanation for why this might be so?
A. The cold has slowed the movement of blood.
B. The person’s blood vessels in the dermis have undergone vasoconstriction (narrowing).
C. The person is in fear of hypothermia (sever cold exposure).
D. The person’s blood vessels in the epidermis have undergone vasodilation (widening).
Answer:B
A light skinned person who is very cold may have a pale appearance. Which of the following is the best explanation for why this might be so?
A. The cold has slowed the movement of blood. B. The person’s blood vessels in the dermis have undergone vasoconstriction (narrowing). C. The person is in fear of hypothermia (sever cold exposure). D. The person’s blood vessels in the epidermis have undergone vasodilation (widening).