Dermis and Hypodermis
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11 Terms
what are the layers of connective tissue dermis is made of called
papillary and reticular
papillary layer
soft, top part of dermis with little bumps, tiny blood vessels, nerves, and touch sensors to support and protect.
reticular layer
thick, strong bottom part of dermis made of dense fibers that give skin strength, stretch, and structure.
hypodermis
deep layer under dermis made mostly of fat that cushions the body, insulates, and anchors skin to bone and muscle tissue underneath
what determines skin pigmentation
amount of melanin produced by melanocytes in stratum Basle
black and brown melanin
eumelanin
red melanin
pheomelanin
how long after sun exposure does melanin synthesis peak
10 days
what causes wrinkles and skin cancer
sun exposure destroying cellular skin structure
what causes freckles and moles
large of irregular gathering of melanin producing melanocytes
what causes darker skin
more melanin