WEB WOC Seminars exam 2023 with 1005 correct answers
How often does epidermal turnover occur? Every 26-42 days Epidermal Cells: Keratinocytes Produce keratin, make of 80% of the epidermis Epidermal Cells: Melanocytes Determine the color of the skin Epidermal Cells: Langerhans Cells Assist with skin immune system Epidermal Cells: Merkel Cells Provide tactile reception, produce nerve growth factor Rete Ridges/Pegs Fingerlike extensions that anchor the epidermis to the dermis Skin pH 4.5-6.5 Dermal proteins Collagen and Elastin Dermal Cells: Fibroblasts Produce collagen and other proteins Dermal Cells: Mast cells, Macrophages, & Lymphocytes Cells involved in immune surveillance Dermal appendages Hair follicles, sebaceous glands, sweat glands, nails Emollients soften skin an provide lipids (i.e. silicone, dimethicone, lanolin, ceramide Humectants add water to skin (i.e. urea, lactic acid, glycerin) Moisture Associated Skin Damage (MASD) inflammation and erosion of the skin caused by prolonged exposure to various sources of moisture
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