INTEGUMENTERY SYSTEM
INTEGUMENTERY SYSTEM MISCELLENOUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is a result of UV exposure that benefits the skin?
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Vitamin D production
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Sunburn
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Keratinocytes shed off
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It increases surface area
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Explanation:
Detailed explanation-1: -During exposure to sunlight 7-dehydrocholesterol in the skin absorbs UV B radiation and is converted to previtamin D3 which in turn isomerizes into vitamin D3.
Detailed explanation-2: -When your skin is exposed to sunlight, it manufactures vitamin D. The sun’s ultraviolet B (UVB) rays interact with a protein called 7-DHC in the skin, converting it into vitamin D3, the active form of vitamin D.
Detailed explanation-3: -UV light shuts down immune system cells in the skin. It can help in skin conditions that are caused by an overreaction of the immune system. Skin conditions that are treated with phototherapy include: Psoriasis-a skin disorder that causes red, silvery, scaly patches on the skin.
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