NURS 1750 Chapter 5: Nursing 63-175 Chapter 5: A&P: Integumentary
16 Dec 2016
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The integumentary system contributes to homeostasis by protecting the body and helping regulate body temperate. It also allows you to send pleasurable, painful and other stimuli in your external environment. The integumentary system is composed of the skin, hair, oil and sweat glands, nails, and sensory receptors. Cutaneous membrane, covers the external surface of the body and is the largest organ of the body in weight. Protects body from external environment keratin, sebaceous cells, lipids, intraepidermal macrophages. Detects cutaneous sensations fi(cid:374)gertips (cid:272)a(cid:374) tell what you"re touching. Excretes and absorbs substances salt, vitamins, toxins, drugs, co2. Synthesizes vitamin d molecule in skin/ uv 15 min biweekly. Deep to the skin is the subcutaneous layer, which attaches the dermis to underlying fascia. The skin consists of a superficial, thin epidermis and a deep, thicker dermis. While the epidermis is avascular, the dermis is vascular.
