HISTOLOGY
INTEGUMENTARY SYSTEM SKIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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You lose enough Keratin cells to replace your epidermis how often?
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1-2 weeks
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4-6 weeks
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5 1/2 months
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Annualy
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Explanation:
Detailed explanation-1: -The epidermis is continually renewed from stem cells, with a turnover time, in humans, of the order of a month.
Detailed explanation-2: -The epidermis constantly renews itself: New cells are made in the lower layers of the epidermis. These move to the surface within four weeks. This constant renewal serves to replace the cells that are lost and fall to the ground as tiny flakes of skin when the skin is rubbed.
Detailed explanation-3: -In humans, it is estimated that keratinocytes turn over from stem cells to desquamation every 40–56 days, whereas in mice the estimated turnover time is 8–10 days.
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