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15 Cards in this Set
- Front
- Back
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what is the integementary system include?
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Hair,nails, sweat and oil glands and skin
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What are the 2 distinct regions of the skin?
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epidermis, the outermost layer
dermis, underlying layer that makes up bulk of skin |
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What is the epidermis made of?
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Stratified squamous epithelium
it doesn't have any nerves or blood vessels |
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What are cells of the epidermis? (4)
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KERATINOCYTES
MELANOCYTES MERKEL CELLS LANGERHAN'S CELLS |
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What is the function of the Keratinocytes?
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Outermost layer of cells in epidermis and produce keritin
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what is the function of the keritin?
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it is the protein that protects the epidermis
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How often do we get a totally new epidermis because of the scale-like cells rubbing off every day?
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We get a totally new epidermis every 25 - 45 days
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what is a callus?
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A thickening of the epidermis because of friction (hands and feet)
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What are Melanocytes?
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Cells that make up the skin pigment. In the deepest layer of the epidermis
Protection from UV rays |
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What are the disadvantages to getting a sun tan?
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It is sun damage because of the melenain released to protect
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Langerhan's cells?
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They arise from the bone marrow and migrate to the epidermis. star-shaped and are phagocytes. They also stimulate our immune system
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Merkel Cells?
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Last layer of cells in the epidermis. Have sensory nerve endings and are used in touch.
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Layers in the epidermis in thick skin, Palms,fingertips, and soles of feet
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STRATUM BASALE,
STRATUM SPINOSUM STRATUM GRANULOSUM STRATUM LUCIDUM STRATUM CORNEUM |
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What is the function of the Stratum Basale layer?
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It is the deepest layer in the epidermis and it's where cell division takes place.
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What is the function of the Stratum Spinosum?
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It is the 2nd deepest layer in epidermis
called "prickly cells" because of shape |
