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 person's blood vessels in the dermis have undergone vasoconstriction (narrowing).
B) The person's blood vessels in the epidermis have undergone vasodilation (widening).
C) The person is in fear of hypothermia (sever cold exposure).
D) The cold has slowed the movement of blood.

Question

Quizplus · Accepted Answer

When the body is exposed to cold, the blood vessels in the dermis (the layer of skin below the epidermis) narrow or constrict in order to conserve heat and redirect blood flow to the body's core. This reduction in blood flow can cause a pale or blanched appearance in lighter-skinned individuals.

A Light Skinned Person Who Is Very Cold May Have