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Chapter 5 Integumentary System
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Functions Chemical barrier Physical barrier Biological barrier
Body temperature regulation Sensation Metabolism (vitamin D) Blood reservoir Excretion
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Epidermal Cells Melanin & carotene pheomelanin (red) and eumelanin (very dark brown).
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Layers of the Epidermis
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Parts of the Dermis Pacinian corpuscles – pressure
Meissener’s corpuscle - touch Hair follicles Sweat glands Blood vessels Arrector pili muscles Dermal Papillae (tactile corpuscle)
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Imbalances Erythema Pallor or blanching Jaundice
Bronzing (Addison’s disease) Hematomas Cyanosis
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Hair Vellus (fine) hair and terminal hair
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Glands Sudoriferous (Sweat)
Eccrine sweat glands: function throughout life. Apocrine: located in the axilla, groin, areolae, and beard areas. Begin functions at puberty. Ceruminous glands – wax in the ears. Mammary glands = milk Sebaceous glands = oil (sebum)
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Fingernails
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Epidermal wound healing
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Deep wound healing
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Skin cancers
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Types of Skin Cancers Malignant Melanoma Basal Cell Carcinoma
Squamous Cell Carcinoma
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Burn chart
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Words to Know Albinism Hemangioma Impetigo Laceration Nevus Pruritis
Psoriasis Wart Vitiligo
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