integumentary system skin components of the integumentary system skin hair nails glands
DESCRIPTION
Components of the integumentary system Skin Hair Nails GlandsTRANSCRIPT
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INTEGUMENTARY SYSTEM
skin
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Components of the integumentary system
SkinHairNailsGlands
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Skin is the human body’s largest organ
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The #1 function of skin
PROTECTION
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How Skin Protects the BodyBarrier against infection and
injuryHelp regulate body temperatureRemove waste productsProvide protection against UV
radiation from the sunProduce Vitamin D
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Skin also transmits sensations like…PressureHeatColdPain
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Cool facts about skin Waterproof Self-repairing Keeps germs and water OUT Keeps body fluids (like blood) and salts
IN Sweat is a way to get rid of unneeded
chemicals Skin is alive and renews the top layer
about once a month
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Layers of the skin Top layer
Epidermis
Middle layer Dermis
Bottom layer Subcutaneous
layer
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What is in the Epidermis?Epithelial TissueOuter layer of dead cellsMelanocytes
Produce melanin – a dark brown pigment (color)
Pores
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What is in the Dermis?Living cellsBlood vesselsHair folliclesNerve endingsMuscles Glands
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The Two Main Glands in SkinSweat glands
Release sweat to cool bodySebaceous (oil) glands
Keeps skin softWaterproof skinProtect against germs
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Muscles in Skin???The tiny muscles attached to hair follicles cause “goose bumps” when they contract and pull the hair upright
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What is in the Subcutaneous Layer???FatConnective tissueBlood vessels
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The job of the subcutaneous layerTo cushion the body’s
internal organs from blows and bumps
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