Skin and the Integumentary System
SKIN AND THE INTEGUMENTARY SYSTEM
CHAPTER 6
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OVERVIEW
This chapter describes the skin and its appendages. It explains the structure and function of the layers of skin (dermis and epidermis) and the hair, nails, and sweat glands. This chapter also explains how the skin helps regulate body temperature and how it responds to environmental factors, such as sunlight and injury. Study of the integumentary system is essential to understanding how the body controls interaction between the internal and external environments.
CHAPTER OBJECTIVES
After you have studied this chapter, you should be able to:
1. Define organ, and name the large organ of the integumentary system.
2. List the general functions of the skin.
3. Describe the structure of the various layers of the skin.
4. Summarize the factors that determine skin color.
5. Describe the accessory organs associated with the skin.
6. Explain the functions of each accessory organ.
7. Explain how the skin functions in regulating body temperature.
8. Describe wound healing.
9.Distinguish amoun the types of burns, including a description of healing with each type.
10. Summarize the life-span changes in the integumentary system.
FOCUS QUESTION
You have spent the day on the beach in 90(heat. You return to your air-conditioned home and notice that you have several insect bites that you have scratched open. How does the skin help you to adjust to the changes in temperature and prevent a systemic infection?
STUDY ACTIVITIES
I. AIDS TO UNDERSTANDING WORDS Define the following word parts.
alb-(white) cut-(skin) derm-(skin) epi-(upon, after, in addition) follic-(small bag) hol-(entire, whole) kerat-(horn) melan-(black) por-(passage, channel) seb-(grease) We are now ready to move to the next higher level of organization. We’ve looked at atoms, molecules, and the macromolecules of life. The interactions of the different types of biomolecules make a living cell
CHAPTER 6
Your Name ()
OVERVIEW
This chapter describes the skin and its appendages. It explains the structure and function of the layers of skin (dermis and epidermis) and the hair, nails, and sweat glands. This chapter also explains how the skin helps regulate body temperature and how it responds to environmental factors, such as sunlight and injury. Study of the integumentary system is essential to understanding how the body controls interaction between the internal and external environments.
CHAPTER OBJECTIVES
After you have studied this chapter, you should be able to:
1. Define organ, and name the large organ of the integumentary system.
2. List the general functions of the skin.
3. Describe the structure of the various layers of the skin.
4. Summarize the factors that determine skin color.
5. Describe the accessory organs associated with the skin.
6. Explain the functions of each accessory organ.
7. Explain how the skin functions in regulating body temperature.
8. Describe wound healing.
9.Distinguish amoun the types of burns, including a description of healing with each type.
10. Summarize the life-span changes in the integumentary system.
FOCUS QUESTION
You have spent the day on the beach in 90(heat. You return to your air-conditioned home and notice that you have several insect bites that you have scratched open. How does the skin help you to adjust to the changes in temperature and prevent a systemic infection?
STUDY ACTIVITIES
I. AIDS TO UNDERSTANDING WORDS Define the following word parts.
alb-(white) cut-(skin) derm-(skin) epi-(upon, after, in addition) follic-(small bag) hol-(entire, whole) kerat-(horn) melan-(black) por-(passage, channel) seb-(grease) We are now ready to move to the next higher level of organization. We’ve looked at atoms, molecules, and the macromolecules of life. The interactions of the different types of biomolecules make a living cell