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Do Now: - Page 38

Do Now: - Page 38. Fun Fact of the Day. Page 38. Do Now: Receive New Packet. Put your name on that bad boy. The Integumentary System. The human integumentary system includes skin, hair, nails, and some glands of the skin. Skin.

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Do Now: - Page 38

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  1. Do Now: - Page 38 Fun Fact of the Day

  2. Page 38

  3. Do Now: Receive New Packet Put your name on that bad boy

  4. The Integumentary System • The human integumentary system includes skin, hair, nails, and some glands of the skin.

  5. Skin • Outer protective covering of the body; largest organ of the body

  6. Handout Functions of the Skin 1. 2. 3. 4.

  7. Handout Layers of the Skin • Epidermis – outer layer of the skin; made up of dead cells; comes in contact with the environment • Dermis – inner layer of the skin that contains blood vessels, nerves, glands, muscles and hair follicles • Subcutaneous tissue (fat) – layer of fat cells beneath the skin

  8. Handout Structure of the skin • Melanocytes – produce melanin, a dark brown pigment • Keratin – a tough fibrous protein that makes up the epidermis

  9. Handout Glands of the Skin • Sweat gland – produce perspiration, or sweat • Sebaceous gland – produce an oily secretion called sebum that keeps the epidermis flexible and waterproof

  10. Skin Problems – Add On Acne – develops when sebum and dead skin cells form plugs in hair follicles. Bacteria are often trapped in the plug and cause infection and inflammation

  11. Skin Problems – Add On Hives – red welts that form because of allergic reactions

  12. Skin Problems – Add On Melanoma – Skin cancer caused by excessive exposure to UV radiation from the sun and artificial radiation from tanning beds

  13. about the Skin

  14. Do Now: Page 9 ½ Homework: Page 939, 1 – 3

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