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Hair, Nails, Infections

Hair, Nails, Infections. Do Now. 3 in 3 3 things from last class in 3 minutes Homework Review. Homework. Answer questions from the text book Pages and number to be determined. Where does hair come from?. Produced by a hair follicle Daughter cells are created and pushed away Die

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Hair, Nails, Infections

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  1. Hair, Nails, Infections

  2. Do Now • 3 in 3 • 3 things from last class in 3 minutes • Homework Review

  3. Homework • Answer questions from the text book • Pages and number to be determined

  4. Where does hair come from? • Produced by a hair follicle • Daughter cells are created and pushed away • Die • Due to death, almost entirely protein

  5. Function • Minor protective functions • Guard against bumps • Keeps sweat out of eyes • Shields eyes • Keeps foreign particles out of respiratory tract

  6. Nail • Modification of the epidermis • Comparable to a hoof or claw of other animals • Transparent/colorless • Pink color is from large blood supply • Blue color signifies lack of blood supply

  7. Infections • Athlete’s foot • Itchy, red, peeling between toes • Fungus

  8. Infections • Boils • Inflammation of the hair follicle • Bacterial infection • Form of staph infection

  9. Infections • Cold Sore (fever blisters) • Itch and sting • Herpes Simplex infection • Remains dormant until activated by emotional upset, fever or UV radiation

  10. Infections • Contact Dermatitis • Itching, redness and swelling of skin • Caused by an exposure to chemicals

  11. Infections • Impetigo • Pink, water filled lesions • Develop to yellow crust • Caused by highly contagious staph infection

  12. Infections • Psoriasis • Chronic • Overproduction of skin cells • Red lesions • Cover with dry, silvery scales • Believed to be caused by body’s own immune system attacking a person’s tissues • Triggered by trauma, stress or infection

  13. Infections • Methicillin-Resistant Staphylococcus Aureus • (MRSA) • Resistant to most antibiotics • Open wounds or sores that become infected

  14. Bill Nye! • http://www.youtube.com/watch?v=hUcyEhukn1M

  15. Homework • Answer questions from the book • Pages and numbers to be determined

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