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The Human Eye February 7, 2013

Explore the structure and function of the human eye in this engaging lesson. Create an eye diagram, label each part, and understand its function. Test your knowledge with a post-lesson assessment. Utilize online resources for extra clarity.

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The Human Eye February 7, 2013

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  1. The Human EyeFebruary 7, 2013 Expected Performance: (B.21) Describe the structure and function of the human eye.

  2. Science Content Review

  3. Science Content Review

  4. Eye Lesson Directions • Use the rubric to create an eye diagram. Be sure to label and give the functions of each term listed. • You are aloud to use your science textbook and the computer to help you with this task. • We will view the remainder of the power point to gain extra clarity on all the parts of the eye. • We will take an eye assessment on the computer to assess our understanding.

  5. Cornea • The transparent front part of the eye that covers the iris and the pupil. • The cornea refracts light and helps focus on objects!

  6. Iris • The iris is a ring of muscle that contracts and expands to control the size of the pupil. • Controls the amount of light reaching the retina • Colored part of the eye

  7. Pupil • An opening by which light enters the inside of the eye (retina) • Appears black because most of the light entering the eye is absorbed by the tissue inside the pupil • The pupil gets wider in the dark but narrower in light.

  8. Lens • A transparent structure in the eye used to refract light to be focused on the retina

  9. Vitreous Humor • The vitreous is the transparent, colorless, gelatinous mass that fills the space between the lens of the eye and the retina lining the back of the eye

  10. Retina • The retina is a light sensitive tissue lining the inner surface of the eye • The retina has two kinds of cells that detect light • Rods • Dim light • Cones • Red, Green, and Blue light

  11. Optic Nerve Eye • Receives the signals from the Retina’s rods and cones • The optic nerve, also called cranial nerve II, transmits visual information from the retina to the brain. Brain

  12. Post Lesson Assessment • http://www.enchantedlearning.com/subjects/anatomy/eye/label/labeleye.shtml • Go to the above cite and take the quiz using the vocabulary supplied in the box • After you do the best you can, check your answers!

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