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).

Question

Quizplus · Accepted Answer

When a person is exposed to cold, their blood vessels in the skin's dermis narrow, decreasing blood flow to the surface of the skin. As a result, the skin appears pale or blanched as less blood in the skin means less red color. This narrowing of blood vessels is known as vasoconstriction.

A Light Skinned Person Who Is Very Cold May Have