Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
A) The skin is protected by the synthesis of three pigments that contribute to the skin's color.
B) Carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight.
C) The skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system.
D) Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen.

Question

Quizplus · Accepted Answer

Prolonged exposure to the sun leads to the dispersion of melanin, which in turn helps to protect the skin from UV damage. Melanin is a pigment that absorbs UV radiation and reduces its penetration into the skin. This response is a natural defense mechanism of the body that helps to protect the skin from the harmful effects of UV radiation. Option A is incorrect because although pigments help to determine skin color, they do not directly protect the skin from UV radiation. Option B is incorrect because carotene is not synthesized in response to sunlight exposure, and it does not directly protect the skin from UV radiation. Option C is incorrect because although dendritic cells help to activate the immune system, they do not directly protect the skin from UV radiation.

Which of the Following Statements Indicates the Way in Which