5.11: Test Yourself

Now use this Skin Test Yourself to see how much you have learned and remember.

1. The two layers that form the skin are the a)     and b)    

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2. The special protein deposited in epidermal cells to make them waterproof is:

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3. Many important skin structures are made of keratin. These include:

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4. Sweat, sebaceous and mammary glands all have ducts to the outside. These kind of glands are known as:    

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5. What is the pigment deposited in skin cells that protects underlying skin layers from the harmful effects of the sun?

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6. How does the skin help cool an animal down when it is active or in a hot environment?

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7. Name two mechanisms by means of which the skin helps prevent heat loss when an animal is in a cold environment.

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