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Notes #7

Integumentary System

Epidermis the very top layer of the skin
dermis the middle layer of the skin containing fibroblasts
hypodermis the bottom layer of the skin, contains veins/arteries/fat
1st degree burn only affects the epidermis and causes redness with a little pain
2nd degree burn affects the epidermis and dermis, causes severe pain and leaves blisters
3rd degree burn affects the epidermis, dermis, and hypodermis. Is not painful because the nerves are burned off causes no feeling. Sever blistering remains with waxy skin
keratinocyte 90% of the cells in the skin, hair, and nails. Helps make the skin waterproof and elastic. It is found in the hypodermis
Melanocyte Produces melanosomes that contain the protein melatonin that protect the keratinocytes from UV damage to the their nucleus. found in the hypodermis
fibroblasts found in the dermis, provide structural support that prevents wrinkles
epi- prefix that means above
sebac- prefix that means sebum (oil or wax)
dermis- prefix that means skin
hypo- prefix that means below or under
lipo- prefix that means fat
cyte- prefix that means cells
Created by: ab1744