INTEGUMENTERY SYSTEM
DERMIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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keratin is the skin pigment that protects us against ultraviolet light.
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true
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false
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -UV radiation causes lesions or DNA damage to melanocytes, which are the skin cells that produce the skin pigment known as melanin. Melanin is a protective pigment in the skin, blocking UV radiation from damaging DNA and potentially causing skin cancer, not the keratin.
Detailed explanation-2: -Melanin Properties Melanin synthesized within melanosomes is transported via dendrites to adjacent keratinocytes, and accumulate within keratinocytes and melanocytes in the perinuclear area as supranuclear “caps” that are thought to shield DNA from UV rays (58).
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