INTEGUMENTERY SYSTEM
EPIDERMIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The thick skin of the palms of the hand and soles of the feet
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The thin skin that covers most of the body
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It is found in all types of skin
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None of the above
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Detailed explanation-1: -The thickness of each layer of the skin varies depending on body region and categorized based on the thickness of the epidermal and dermal layers. Hairless skin found in the palms of the hands and soles of the feet is thickest because the epidermis contains an extra layer, the stratum lucidum.
Detailed explanation-2: -Its presence indicates the importance of having thicker skin to protect against frequent exposure to mechanical stress. The stratum lucidum is found in in between the stratum corneum and the stratum granulosum. The keratinocytes are filled with eleidin (a protein that may be later converted to keratin).
Detailed explanation-3: -The dermis is the inner thick layer of connective tissue made of elastic fibers. It is tough and flexible. In certain places, the dermis in the skin is very thick as on the palms and soles, and very thin in other places as on the eyelids.