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Sight and Hearing
| Term | Definition |
|---|---|
| Cornea | The clear tissue that covers the front of the eye |
| Pupil | The opening through which light enters the eye |
| Iris | The circular structure that surrounds the pupil and regulates the amount of light entering the eye |
| Lens | A curved piece of glass or other transparent material that is used to refract light; the flexible structure that focuses light that has entered the eye |
| Retina | A sheet of light sensitive cells at the back o the eye on on which an image is focused |
| Rods | Receptor cells in the eye that work best in dim light and enable you to see black white and gray |
| Cones | Receptor cells in the eye that work best on bright light and enable you to see color |
| Optic Nerve | The short, thick nerve in the eye through which rods and cones send electrical impulses to the brain |
| Eardrum | The membrane that separates the outer ear from the middle ear, and that vibrates when sound waves strike it |
| Hammer | A small bone in the middle ear that transmits vibrations from the eardrum to the anvil; also called the " mallenus " |
| Anvil | A small bone in the middle ear that transmits vibrations from the hammer to the stirrup; also call the " incus " |
| Stirrup | A small bone in the middle ear that transmits vibrations from the anvil to a membrane of the inner ear; also called the " stapes " |
| Cochlea | A snail shaped tube in the inner ear that is lined with receptor cells that respond to sound |
| Semicircular Canals | Structures in the inner ear that are responsible for the sense of balance |
Created by:
FuntomFive
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