Integumentary System
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| Integumentary System | skin, hair and nails form
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| Skin | Protection and Excretion are Functions of
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| Skin | Body Temperature Regulation and and Cutaneous Sensation are Functions of
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| Skin | Vitamin D Synthesis and Blood Reservoir and Functions of
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| Physical, Chemical, Biological | 3 Types of Protection
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| Physical | type of protection keeps organisms out
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| Chemical | type of protection kills bacteria with uric acid and prevents Uv damage with melanin
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| Biological | protection that uses langerhans cells
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| Excretion | wastes excrete through sweat
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| Body Temperature Regulation | sweat used for
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| Cutaneous Sensation | Example is sensory receptors that respond to touch and pain
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| Vitamin D Synthesis | From cholestrol absorbs calcium into intestines
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| Blood Reservoir | Holds 5% of bodys blood volume
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| Skin | made up of 2 regions or layers
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| Epidermis and Dermis | Names of the 2 Skin layers
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| Epidermis | thin top layer of skin
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| Epidermis | Layer os skin composed of Stratified Squamous Epithelium
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| Keratin | Most epidermal cells made of
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| Keratin | waterproofing protein
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| Dermis | deepest layer of skin
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| Dermis | layer os skin composed of melanocytes and langerhans cells
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| Epidermis | consists of 5 layers or strata
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| stratum basale | deepest layer of epidermis
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| stratum spinosum | prickly layer of epidermis
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| stratum granulosum | granular layer of epidermis
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| stratum lucidum | clear layer of epidermis
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| stratum corneum | horny layer of epidermis
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| Dermis | composed of dense irregular CT
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| Dermis | consists of 2 layers or strata
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| Papillary | layer where fingerprints are formed
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| Reticular | layer makes up 80% of Dermis, where wrinkles form
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| Hypodermis | Superficial Fascia aka
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| Hypodermis | where fat lies not part of skin
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| Skin Color | clinically important in indicating disease or emotional state
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| Skin Color Pigments | melanin, carotene.hemoglobin
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| Melanin | reddish-brown/black exp. moles
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| Carotene | yellowish-orange exp. heels
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| Hemoglobin | pinkish exp. shows through light skin
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| Erythema | redness due to fever, hypertension, inflammation or allergy
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| Pallor | paleness due to anemia, hypotension. surgery
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| Jaundice | yellowness due to liver disorder or failure
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| Bronzing | metallicness due to Addisons Disease-Adrenal
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| Blue/Black | colored bruises due to vit C deficiency or falls
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| Cyanosis | Blue due to oxygen deficiency, heart failure, resp disorders
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| Skin Cancer | commonly caused by exposure to UV rays
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| Assymetry | ABCD Rule- sides don't match
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| Border | ABCD Rule- Irregular
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| Color | ABCD Rule- Red, blue, black
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| Diameter | ABCD Rule- bigger than 10mm
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| Types of Skin Cancer | Basal Cell Carcinoma, Squamous Cell Carcinoma, Melanoma
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| Basal Cell Carcinoma | most common and least malignant skin cancer
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| Squamous Cell Carcinoma | skin cancer that grows rapidly, successfully removed if caught early
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| Melanoma | least common and most dangerous type of skin cancer
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| Regeneration | process by which damaged tissues repair themselves
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| Fibrosis | Process of repair through scar tissue
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| Skin Repair | Inflamation, Organization, and Regeneration are steps of
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