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