Terms : Hide Images
| 5253995643 | Wavelength | the distance from the peak of one light or sound wave to the peak of the next. Electromagnetic wavelengths vary from the short blips of cosmic rays to the long pulses of radio transmission. | 0 | |
| 5253995646 | Pupil | the adjustable opening in the center of the eye through which light enters. |  | 1 |
| 5253995647 | Iris | a ring of muscle tissue that forms the colored potion of the eyes around the pupil and controls the size of the pupil opening. |  | 2 |
| 5253995648 | Lens | the transparent structure behind the pupil that changes shape to help focus images on the retina. | 3 | |
| 5253995650 | Retina | the light sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information. |  | 4 |
| 5253995656 | Optic nerve | the nerve that carries neural impulses from the eye to the brain. | 5 | |
| 5253995658 | Fovea | the central focal point in the retina, around which the eye's cones cluster. |  | 6 |
| 5253995664 | Cornea, pupil, lens, retina, optic nerve | The order which light passes through the eye |  | 7 |
