HTHSCI 1H06 Chapter Notes -Stratum Corneum, Stratum Granulosum, Dermis

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Integumentary system: is composed of the skin, hair, oil and sweat glands, nails and sensory receptors. The integumentary system helps maintain a constant body temperature, protects the body, and provides sensory information about the surrounding environment. Skin is composed of a complex system of cell layers, nerves and glands that protect and connect us to the outside world. If you took it off and laid it flat the surface area would cover 2 square meters. Skin loses about 30,000-40,000 dead skin cells from the surface roughly every minute. Our skin reflects our age and health. Skin is an indicator of clinical conditions and dysfunction: paleness is a sign of shock, redness is a sign of fever, rashes are a sign of allergies, paleness is a sign of loss of blood. Thin skin: four strata or layers- stratum basale, stratum spinosum, stratum granulosum, and a thin stratum corneum.

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