INTEGUMENTERY SYSTEM
INTEGUMENTERY SYSTEM MISCELLENOUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Exposure to water
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Exposure to air
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Exposure to sunlight
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Exposure to ice cream
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Detailed explanation-1: -UVA radiation is what makes people tan. UVA rays penetrate to the lower layers of the epidermis, where they trigger cells called melanocytes (pronounced: mel-AN-oh-sites) to produce melanin. Melanin is the brown pigment that causes tanning.
Detailed explanation-2: -Levels of melanin depend on race and amount of sunlight exposure. Sun exposure increases melanin production to protect the skin against harmful UV (ultraviolet) rays. In addition, hormonal changes can affect melanin production.
Detailed explanation-3: -A healthy glow Human melanocyte skin cells fluoresce as their calcium signaling spikes after exposure to ultraviolet light and retinal, a key step in producing melanin.
Detailed explanation-4: -Exposure to UVB radiation, on the other hand, causes erythema and delayed tanning (DT) and UVB is more efficient than UVA in causing these effects (60). UVB-induced DT is a result of increased melanin synthesis and skin darkening that develops days after UV exposure (34).