| A | B |
|---|
| cornea | protective covering on the font of the eye; helps focus the light |
| pupil | opening in the black part in the center of the eye (similar to shutter of a camera). Muscles control open it (dilate) to let in more light and smaller to let less light in |
| lens | focuses light that enters pupil; As light passes through, the image is flipped upside down and inverted then projected onto retina. |
| retina | The layer of cells lining the back wall inside the eye; special neurons are activated with light and send impulses along optic nerve to occipital lobe of brain. |
| ganglion cells | projection neurons of the retina, conveying information from other retinal neurons to the rest of the brain |
| bipolar cells | are one of the main retinal neurons; provide the main pathways from photoreceptors (rods and cones) to ganglion cells |
| rods | special photoreceptor neurons in retina; detect black and white |
| cones | special photoreceptor neurons in retina: detect color |
| optic nerve | nerve leading from retina to occipital lobe of brain. Carries impulses |
| occipital lobe | sit at the back of the head and are responsible for visual perception, including color, form and motion. |
