2. Introduction The Integumentary System alternate term for (Skin) The largest organ of the body and can weigh more than 20 pounds in a Adults. The skin serves many purposes for the body. Protecting Housing nerve receptors Secreting fluids Regulating temperture
3. Function Of Skin Covers the internal structures of the body protects the body from trauma and bacteria. Prevents the lost of water and electrolytes. Senses temperture, pain, touch , pressure. Regulates body temperture through sweat production and evaporation. Synthesize Vitamin D Promote wound repair
5. 3 Layers Of The Skin Epidermis- is the thin, outer layer membrane layer. Dermis- is the middle, firous connective tissue layer. Subcutaneous- is the innermost layer containing fatty tissues.
6. Epidermis The epidermis is composed of Stratified Squamous Epithelium. This type of tissue consist of: Flat scale-like cells, of dead cells. Overlapping layers of Strata. Does not have blood supply or any connective tissue. Nourishment is through deeper layers of skin.
7. Dermis The dermis is also referred as the Corium, is the middle layer of the skin. The dermis is good living tissue with blood supply. The dermis compose as connective tissue and Collagen fibers. The Dermis houses the Accessory Organs: hair follicles sweat glands sebaceaus glands blood vessels lymph vessels sensory receptors nerve fibers muscle fibers
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9. Deep Layers Of Skin Basal layer- cells in layers continually grows and multiply. Keratin- protein cells overlapping allowing skin to act as a effective barrier to infection, making it waterproof. Melanocyte- a special cell which produce black pigment to the skin. ( Melanin)
10. Test Your Knowledge What is the Epidermis? How many Layers of Skin are in the cells? What is Melanocyte? What are the functions of the Skin? Where are the Accessory Glands located? Black pigment call Melanin . Covers internal organs Hair, Nails, sweat glands 3 layers of the skin Thin outer layer membrane
