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3: appendages of skin (hair (hair follicle (holds hair root and bulb,…
3: appendages of skin
hair
shaft(above skin), root(below skin), bulb(root base)
3 layers: medulla(innermost), cortex and cuticle(outermost)
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egs nose hair eyelash keep out foreign particles, scalp hair shields hair from sunlight
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cutaneous glands
sebaceous(oil) glands
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produces sebum which is an oily waxy lubricant that keeps skin soft and prevents hair from becoming brittle
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sweat glands
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produces sweat
99% water, 1% salt and metabolic wastes
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