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15 Cards in this Set

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