Q1. Provide an example for each function of the integumentary system.

Q2. From deepest to most superficial, name and describe the five strata of the epidermis. In which stratum are new cells formed by mitosis? Which strata have live cells, and which strata have dead cells?

Q3. Describe the structural features resulting from keratinization that make the epidermis structurally strong and resistance to water loss.

Q4. Compare the structure and location of thick and thin skin. Is hair in thick or thin skin?

Q5. Which cells of the epidermis produce melanin? What happens to the melanin once it is produced?

Q6. How do genetic factors, exposure to sunlight, and hormones determine the amount of melanin in the skin?

Q7. How do carotene, blood flow, oxygen content, and collagen affect skin color?

Q8. Name and compare the two layers of the dermis. Which layer is responsible for most of the structural strength of the skin?

Q9. What are formed by the dermal papillae in thick skin? What roles do they have?

Q10. What are cleavage lines and how are they related to the healing of a cut?