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15 Cards in this Set
- Front
- Back
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Five epidermal layers - starting from the basal layer
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Stratum Germinativum;
Stratum Spinosum; Stratum Granulosum; Stratum Lucidum; Stratum Corneum |
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Integumentary System includes
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Main structure:
Skin; Accessory structures: Hair; Nail; Gland |
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Functions of skin
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Protection; Prevention of dehydration; Maintenance of body temperature; Excretion of waste; Reception of stimuli; Storage of nutrients; Vitamin D synthesis
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Skin structure
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Outer epidermis; Inner dermis; Hypodermis or subcutaneous
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2 layers of skin
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Thin - 4 layers; Thick - 5 layer
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Stratum Germinativum
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1 layer; Innermost or basal layer; Producing new cells continously
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Stratum Spinosum
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10 layers; Alive and active but not dividing; Has keratinocytes and Langerhans cells
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Stratum Granulosum
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3-5 layers; Cells begin to die and produce keratohyalin
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Stratum Lucidum
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3-5 layers; Not found in thin skin; Clear and colorless layer
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Stratum Corneum
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15-30 layers; Outermost layer; Durable and waterproof
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Cells found in epidermis
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Keratinocytes; Melanocytes; Langerhans; Merkel
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Keratinocytes
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Most abundant cells in epidermis; Carry melanin
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Melanocytes
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Large cells that makes melanin; Inject melanin to keratinocytes
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Langerhans
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WBC that look for debris and foreign agents and clean it up
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Merkel cells
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Nervous or sensory receptor cells; Detect fine touch
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