IntegSys - 1 The functions of the integumentary system 1 2...

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1. The functions of the integumentary system: 1. 2. 3. 4. 5. Two Main Layers of the Skin: I. II. _______________________________________________________ ______ I. The Epidermis: 1. The ________________ (surface) layers of skin Epidermis is __________________ cells thick. There are two parts: a. The inner part is composed of _______________ cells. b. The outer part is composed of _______________ cells. 2. The lowest layer of cells _________________ and push older cells toward the surface. 3. As the cells near the surface they ____________________ and their organelle _____________________. 4. Finally, these cells begin producing __________________________ a tough, fibrous protein. This replaces the ______________________. 5. The Keratin producing cells ____________ as they move toward the surface (farther away from blood supply). 6. Outer dead layer _____________________ and _____________________ the body. 7. It is shed ______________________ and is completely replaced in 2 - 4 weeks 8. What do we find in the epidermis?
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9. What are melanocytes? 10. What is melanin? 11. What does melanin do? a. b. 12. Some people have more melanocytes than other people True/False 13. Skin pigmentation is due to the _____________ of melanin
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