Nursing 1080A/B Chapter 11: week 11 readings
20 Mar 2017
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The skin offers protection from ongoing environmental changes and is a barrier to infectious organisms. It connects with the epidermis to do oxygen exchange: reticular. Insulation, storage of caloric reserves, and cushioning against external forces. *the integumentary system is a window to other body systems. Changes in skin, hair, or nails may be the first clue to other health issues. It varies in length and is generally found on the scalp, brows, and eyelids: after puberty, terminal hair is found on the axillae, perineum, and legs, and for males the chest and abdomen as well. Hair is produced by hair follicles that are deep in the dermis. The shape of the hair shaft determines the curliness of hair, with oval shape producing curlier hair than rounded shape. Sebaceous glands supporting each follicle secrete sebum, maintaining hair moisture and condition. Nails arise from a nail matrix in the epidermal layer.
