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1. In humans, exposure of the skin to sunlight is required for ________.
 
 
 
 

Question 1 of 7

2. One of the functions of the integumentary system is protection. Which of the following does not directly contribute to that function?
 
 
 
 

Question 2 of 7

3. An individual using a sharp knife notices a small amount of blood where he just cut himself. Which of the following layers of skin did he have to cut into in order to bleed?
 
 
 
 

Question 3 of 7

4. As you are walking down the beach, you see a dead, dry, shriveled-up fish. Which layer of your epidermis keeps you from drying out?
 
 
 
 

Question 4 of 7

5. If you cut yourself and bacteria enter the wound, which of the following cells would help get rid of the bacteria?
 
 
 
 

Question 5 of 7

6. Critical Thinking: Why do people sweat excessively when exercising outside on a hot day?

Question 6 of 7

7. Critical Thinking: Explain your skin’s response to a drop in body core temperature.

Question 7 of 7