Integumentary System
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| Hair-Composition | Keratin, Melanin
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| Hair- Function | protection from injury, sun, heat loss, or foreign particles
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| Hair- nerve ending | Sensitive to touch
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| Hair- oil | Sebaceaous gland
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| Hair - muscle | Arrector pili
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| Sebaceaous Gland | Secrete Sebum (oil)
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| Sebeceaous Gland - location | Every where but palms and soles
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| Sebaceaous Gland - function | prevent skin from drying out, inhibits bacterial growth and keeps skin flexible
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| Acne | over-production of sebum with bacterial growth (pimple)
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| Sudoriferous glands | Secrete sweat, directly onto skin
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| Sudoriferous glands- function | Regulate body temp (evaporation), eliminate waste (urea)
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| Eccrine gland (sudoriferous gland) | Most common type, forehead, palms and soles with watery secretion
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| Apocine gland (sudoriferous)- location | "smelly areas", axilla, inguinal, breast regions
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| Apcine gland (secretetion) | Phermones attracts- oposite sex
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| Ceruminous glands | Secrete ear wax (modified sudoriferous gland)
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| Ceruminous gland function | traps foriegn particles and bugs to prevent damage to ear
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| Mammary glands secrete | Milk
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| Mammary gland is modified | Sudoriferous gland
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| Nipple | pigmented projection where all milk ducts empty
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| Areola | circular pigmented area around nipple, rough due to oil glands
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| Mammary gland function | Lactation (synthesis, seccretion and ejection of milk
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| Nails are composed of: | hard keratin plates
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| Nail- function | Grasp/manipulate objects, protection end of finger or toe
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| Nails grow: | 1 mm per week
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