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Integumentary System

QuestionAnswer
What is the largest Organ? Skin
Where is the thinnest part of the Skin at 0.1mm? Over the eyelids
Where is the thickest part of the Skin at 1mm? Over the palms of hands + soles of feet
How much does the skin approximately weigh? 6-8lbs
What is the surface area of the skin? 20sq ft
What are the layers of the Skin? Epidermis - Dermis - Subcutaneous
What is the function of the Dermis layer? Provides strength and elasticity
What is the function of the Subcutaneous layer? Provides support and stores fat + protects internal structures
How many layers are there to the Epidermis? 5 layers
What are Keratinocytes? Proteins that provide strength to hair, skin and nails
What are Melanocytes? Form the skins pigmentation
What is the function of Dendritic Cells? Process antigen material + present it on cell surface to T cells of the immune system
What is Allergic Contact Dermatitis? T cell mediated inflammatory reaction
What is the function of the Skin? Protection - Sensation - temp regulation - Excretion - Source of Vitamin D
What happens to the Skin as we age? Skin function declines - Becomes flatter + thinner - reduced elasticity - decreased sensation - dehydrated
What are acute wounds? Short in duration - happen suddenly - heals over time
What are Chronic wounds? Longer in duration - underlying issues eg Venous Insufficiency - Inflamed
What are the Healing phases? Hemostasis (Blood Clots) 1-3 days Inflammatory (Scab) 3-20 days Proliferative (Pulls wound together) wk1-6 Remodeling (Final proper tissue) wk6-2yrs
What are some factors the effect healing? Age - Anaemia - Medications - Temp - Smoking - Nutrition - Health condition
What are some local factors that effect healing? Blood Supply - Denervation - Duration - Infection - Size - Location
What are the categories of wounds? Dry necrosis - Wet necrosis - Slough - Infected/Maladourous - Granulating - Epithelialising
What are the characteristics of Granulation? Healthy - Bright red/Moist/Shiny/No bleeding Unhealthy - Dark red/Dry/Dull/Bleeds easily
What are the characteristics of Slough? Yellow/white material Dead cells - Neutrophilis - prolongs inflammatory response Prevents healing
Created by: Meganp7290
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