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distingueshed between the stratum cosoly and the stratum cornea reguarding structure and function?
stratum basal lies superior to the dermis and are constantly dividing and producing new cells that get pushed to the surface in 2-4 weeks. Because they are not supplied with nutrients they eventually die cells pushed to the surface become hard from uppermost layer of epidermis stratum+ corneum)
explain the difference between 1st degree and 3rd degree which 1 would require skin grafting?
1st degree- only epidermis is affected 3rd degree- destroys the entire thickness of skin and may need grafting because the skin may be destroyed and need to be replaced)
describe the effects that long term exposure to the sun have on the skin?
skin cancer or tumors)-the UVA rays allow UV rays to cause cancer.-UV radiation causes epidermal basal cells to form tumors.)
describe how seat cools the body and explain y sitting in fount of a fan cools the body rapidly?
body is hot eccrine glands open onto the skin. it helps lower body temp as sweat evaporates,fan supplies cool breeze which helps the evaporation.)
what happens to cells when they move from the epidermis to the surface of the skin?
-become flat and hard -top layer of epidermis then dies)
which layer of the epidermis protects from abrasions and is found only in thick skin?
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