According to the video:
 1. What does the skin protect the body against?
 2. Why is the function of keratin?
 3. What does the stratum corneum consist of?
 4. Where is the stratum lucidum located?
 5. What kind of cells is the stratum granulosum composed of?
 6. What other term is used for the stratum spinosum?
 7. What does melanin provide?
 8. What are Merkel cells usually associated with?
 9. What does the term skin regeneration mean?
10. What is corium?
11. What is the hypodermis part of?