When a person becomes "pale," what is the physiologic basis?
A) The blood supply to the skin increases.
B) The number of red melanocytes in the skin increases.
C) Melanocytes increase production of red pigments.
D) The blood supply to the skin decreases.
E) Increased heat causes the skin to turn red.

Question

Quizplus · Accepted Answer

When a person becomes pale, the blood supply to the skin decreases, resulting in less blood reaching the surface of the skin. This can be due to a variety of factors, such as shock, fear, or a decrease in body temperature. Less blood reaching the surface of the skin means less oxygen and nutrients being delivered to the skin, resulting in a paler appearance.

When a Person Becomes "Pale," What Is the Physiologic Basis