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| specialized neurons in your body that allow you to taste, smell, hear, see and touch |
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| Throughout your body; unevenly distirbuted. |
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| associated with taste and smell; recognizes "chemicals" in food and air |
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| respond to mechanical pressure |
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| located in eye (in the form of rodes and cones) |
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| retina, cornea, lens, iris, and pupil |
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| The structures of the eye are... |
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| thin layer of tissue found at the back of the eye made up of light receptors |
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| a tough, clear protective layer of cells in front of the eye |
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| structure of the eye that focuses an inverted image and projects it onto the retina |
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| a disk-shaped structure that is the colored part of the eye |
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| a small opening in the middle of the iris where light enters |
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| Light enters cornea, focuses light through pupil which changes sizes (controlled by iris), lens invert image onto retina, rods and cones provide info on image, Action Potential travels from rod and cones to optic nerve to brain where it interprets signals and forms an image. |
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| receptor cells in the retina that is well adapted for vision in dim light; helps detect shape and movement |
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| receptor cells in the retina that are adapted for vision in bright light; provides info about color to the brain |
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| Both are located in the retina; both interpret info for the brain; and both are photoreceptors. |
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| What do rods and cones have in common? |
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| tympanic membrane (eardrum) |
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| a thin membrane that vibrates when sound waves reach it |
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| tube that connects the middle ear to the back of the nose; equalizes pressure b/t middle ear and air outside. |
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| tiny bone that passes vibrations from eardrum to anvil |
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| tiny bone that passes vibrations from hammer to stirrup |
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| tiny, U-shaped bone that passes vibrations to the cochlea; smallest bone in the human body |
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| snail shaped, fluid filled inner ear structure; lined w/ cilia that move when vibrated and cause a nerve impulse to form |
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| 3 loops of fluid filled tubes that are attached to the cochlea in the inner ear; help us maintain out sense of balance |
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| carry electro-chemical signals from the inner ear (cochlea) to the brain |
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