INTEGUMENTERY SYSTEM
INTEGUMENTERY SYSTEM MISCELLENOUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The number of melanocytes a person has
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The number of keratinocytes a person has
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The amount of keratin a person produces
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The amount of UV light a person is exposed to
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Detailed explanation-1: -The outer layer of the skin has cells that contain the pigment melanin. Melanin protects skin from the sun’s ultraviolet rays. These can burn the skin and reduce its elasticity, leading to premature aging. People tan because sunlight causes the skin to produce more melanin and darken.
Detailed explanation-2: -Levels of melanin are primarily determined by genetics; individuals born to fair skinned parents will inherit their parent’s fair skin, as individuals born to dark skinned parents will inherit dark skin. The level of inherited skin pigmentation is referred to as constitutive pigmentation.
Detailed explanation-3: -In most people, UV rays activate a chemical in the skin called melanin. This is the skin’s first defense against the sun. Melanin absorbs the dangerous UV rays that can do serious skin damage. This is the process that gives you a tan.