CK12 Life Science

Further Reading / Supplemental Links

CK12 High School Biology, Chapter 35http://www.fda.gov/CDRH/LASIK

• Body Atlas.Nerves, Brain and Senses. Ticktock Media Ltd., 2004.


• Donald B. Light.The Senses.Chelsea House Publications, 2004.


• Christopher Sloan. The Human Story: Our Evolution from Prehistoric Ancestors to
  Today. National Geographic Children’s Books, 2004.


• http://www.veterinaryvision.com/See.htm


• http://en.wikipedia.org/wiki

Review Questions

1. What is vision?


2. Describe the lens of the eye and what it does.


3. What happens when light is focused on the retina of the eye?


4. Describe visible light.


5. What is hyperopia?


6. Explain how humans can see in three dimensions.


7. Why were depth perception and color vision important for early primates?


8. Black is sometimes defined as the absence of light. Why?


9. Assume you see a bright red apple. Why does the apple look red?


10. What causes myopia, and what type of lens corrects it?

Vocabulary

cornea Clear, protective covering on the outside of the eye that helps focus light.

hyperopia Visionprobleminwhichdistantobjectsareclearbutnearbyobjectslookblurry;
also called farsightedness.

iris Colored structure at the front of the eye.

lens Clear, curved structure in the eye that focuses light on the retina.

myopia Vision problem in which nearby objects are clear but distant objects look blurry;
also called nearsightedness.

pupil Black opening in the iris that lets light enter the eye.