QUESTIONS AND ANSWERS
How often does epidermal turnover occur? - ANS Every 26-42 days
Epidermal Cells: Keratinocytes - ANS Produce keratin, make of 80% of the epidermis
Epidermal Cells: Melanocytes - ANS Determine the color of the skin
Epidermal Cells: Langerhans Cells - ANS Assist with skin immune system
Epidermal Cells: Merkel Cells - ANS Provide tactile reception, produce nerve growth factor
Rete Ridges/Pegs - ANS Fingerlike extensions that anchor the epidermis to the dermis
Skin pH - ANS 4.5-6.5
Dermal proteins - ANS Collagen and Elastin
Dermal Cells: Fibroblasts - ANS Produce collagen and other proteins
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, Dermal Cells: Mast cells, Macrophages, & Lymphocytes - ANS Cells involved in immune
surveillance
Dermal appendages - ANS Hair follicles, sebaceous glands, sweat glands, nails
Emollients - ANS soften skin an provide lipids (i.e. silicone, dimethicone, lanolin, ceramide
Humectants - ANS add water to skin (i.e. urea, lactic acid, glycerin)
Moisture Associated Skin Damage (MASD) - ANS inflammation and erosion of the skin caused
by prolonged exposure to various sources of moisture
Intertriginous Dermatitis (ITD) - ANS a type of MASD, inflammation and skin erosion involving
body folds and friction of skin to skin
Peristomal MASD (PMASD) - ANS Inflammation and denudation of the peristomal skin
associated with effluent exposure such as urine or stool
Periwound MASD (PWMASD) - ANS inflammation and erosion of the skin around a chronic
wound associated with sustained contact of wound exudate
Incontinence Associated Dermatitis (IAD) - ANS a type of MASD, inflammation caused by the
prolonged exposure to urine, feces, or dual incontinence
Medical Adhesive-Related Skin Injury (MARSI) - ANS erythema (or other manifestation) of
cutaneous abnormality that persists 30 minutes of more after removal of adhesive dressing or
tape, types: maceration, mechanical trauma (i.e. skin tear), tension blister, folliculitis
What is the key indicator of undernutrition? - ANS unintended weight loss,
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