Question

question 17 (1.7 points) which of the following statements indicates the way in which the bodys natural defenses protect the skin from the effects of uv damage? a) carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight. b) prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen. c) the skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system. d) the skin is protected by the synthesis of three pigments that contribute to the skins color.

Explanation:

Carotene is not synthesized in large amounts in sunlight. Melanin dispersion due to sun - exposure acts as a natural sunscreen by absorbing UV radiation. Increasing dendritic cells is more related to immune response activation rather than direct UV protection. Pigment synthesis for skin color is not the main UV - protection mechanism.

Answer:

B. Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen.