1. Explain the four (4) functions of skin
2. What is melanin? Where is it produced?
3. How does melanin determine skin color?
4. What is the role of hair?
5. How does hair grow?
6. What is sebum? List three functions of sebum.
7. Feel the skin on your elbow. Now touch the tips of your fingers. What is the difference?
8. Where are the only living hair cells located?
9. What causes goose bumps? Why does this happen?
10. Why does hair thin as you age?
11. Why does regular baldness occur?
12. How long does hair grow each year, on average?
13. What causes your hair to be curly or straight?
14. Where are the living nail cells located?
15. What is the cuticle?
16. Why do we have nails?
17. Why does the nail hurt if it is cut too short or if something gets stuck underneath it?
