Student objectives:
1. Discuss the role of the skin in the protection of the body from disease and external injury, and the regulation of body fluids and temperature, absorption, synthesis, sensory reception and communication
2. Discuss the functions of skin, hair, glands and nails
3. Name the glands of the skin and describe the secretions they produce
4. Describe the structure and function of the epidermis, dermis and hypodermis
5. Explain how melanin, carotene, blood and collagen affect skin color
Review questions:
1. Name the components of the integumentary system.
2. What functions does the Integumentary system serve?
3. In what ways does the integumentary system provide protection?
4. What are the layers of the Integumentary system? What components does each layer have/lack?
5. Why is it important that the epidermis serve as a barrier against UV rays, yet not block them out completely?
6. What kind of tissue is the epidermis? Where are new cells formed? From where are they sloughed (ie. Gotten rid of)?
7. Define keratinization. What role does keratinization play?
8. Name the cells that produce melanin. What role does melanin play?
9. Describe the factors that determine the amount of melanin produced in the skin.
10. Explain the differences in skin color between individuals and in different parts of the body.
11. What structure aids to protect us from UV damage to our nuclei? What is skin cancer, what kinds are there and how can we prevent it?
12. What type of tissue is the dermis? What is responsible for its structural strength? How does the dermis supply the epidermis with blood?
13. What type of tissue is the hypodermis and what are its functions?
14. What does it mean that a structure is a "skin derivative"?
15. Briefly describe the structure of hair. What part of hair is the site of hair growth? Is most of the hair alive or dead?
16. What happens when the arrector pili of the skin contract?
17. What roles dothe sebaceous and sweat glands play. How are these glands similar/different?
18. What functions does each of the above types of glands provide?
19. Why is it that sweat is sometimes smelly?
20. What are nails made up of? Describe the structure of the nail and where it grows from. What purpose do nails serve?
21. Explain the role of the Integumentary system in wound healing. How does a wound heal? At what level does healing begin? Where does the blood come from when you receive a wound? Where do new cells come from? What if you don't bleed when you cut yourself, what does that mean?
22. List the steps of wound healing and explain what is occurring in each.