Nose and Olfaction Review

Instructions: This review is based on information on the web page about the nose and olfaction. Select either "true" or "false" for each statement. When you have finished, click on the "Get score" button at the end and your test will be graded. Good luck!

1. Hair cells are the receptors in the olfactory epithelium that respond to particular chemicals.
True
False

2. The vestibulocochlear nerve transmits molecules of smells to the brain.
True
False

3. When you have a cold and your nose is stuffed, you cannot smell very well because the molecules that carry smell cannot reach the olfactory receptors.
True
False

4. People cannot distinguish more than a 1000 different odors.
True
False

5. The sense of smell is called olfaction.
True
False

6. "Insomnia" is the inability to smell.
True
False

7. Research has actually demonstrated what causes olfactory receptors to react.
True
False

8. Chemical molecules enter the nose and dissolve in mucous within a membrane called the olfactory epithelium.
True
False

9. Humans have about 2 billion olfactory receptors.
True
False

10. Hair cells have small hairs called cilia on one side and an axon on the other side.
True
False

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Correct answers:

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