Chapters 3
 Integumentary System - Learning Objectives
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 1. Name and explain the importance of the four ways the integumentary system helps maintain homeostasis.

 2. Name five types of factors for which the integumentary system is a barrier and explain the importance of each.

 3. Name the functions of keratin, melanin, and Langerhans cells, describe the effects of aging on these functions, and explain the importance of these age changes with regard to homeostasis and appearance (where applicable).

 4. Name and describe two age changes in hair or nails (you select your favorites) and explain the importance of the changes you select.

 5. Describe two examples (not found in the text) of social, psychological, or economic effects from age changes in hair or nails.

 6. The integumentary system contributes to homeostasis in four main ways. By using twospecific examples for each of the four ways, describe how age changes in the dermis alter the integumentary system's ability to contribute to homeostasis.

 7. Describe three age changes in the dermis that have cosmetic effects, and explain the cosmetic effects that result from each change you describe.

 8. Name two age changes in the boundary between the epidermis and the dermis, and explain two effects from these age changes.

 9. Explain how age changes in the subcutaneous layer affect its contributions to (1) protecting the body from trauma and (2) maintaining normal body temperature.

10. Describe three practical applications of your knowledge about age changes in the dermis and subcutaneous layers that are not mentioned in the text.

11. Describe the overall age-related trends (e.g., occurrence, severity) in integumentary system abnormalities and diseases.

12. Name four effects from long term chronic exposure of the skin to sunlight.

13. Name four ways to reduce or prevent effects from long term chronic exposure of the skin to sunlight.

14. List and describe benefits from using tretinoin.

15. Name four effects from long term chronic exposure of the skin to heat.

16. Name three factors that increase the risk of developing decubitus ulcers as age increases.

17. Name two adverse effects from decubitus ulcers.

18. Describe the feature that distinguishes benign neoplasia from malignant neoplasia (cancer).

19. Name two adverse effects from benign skin neoplasia.

20. Name two adverse effects from malignant skin neoplasia.

21. Name three ways to prevent the development of integumentary system abnormalities and diseases.

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