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Definition
| Adaptation in response to differences or changing needs; adjustment of the eye for seeing objects at close range. |
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| Receptors sensitive to various chemicals in solution. |
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| A sex-linked condition resulting in the lack of one or up to three different cone types. It occurs almost exclusively in males. |
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| One of two types of photoreceptor cells in the retina of the eye. Provides for color vision. |
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Definition
| Turning towards a common point from different directions. |
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| Sense that reports on angular or rotatory movements of the head in space. |
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| The eye that focuses images correctly on the retina. "Harmonious vision." |
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Definition
| Specific epithelial cells that respond to chemicals dissolved in the saliva. |
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Definition
| Specialized cells located within the organ of Corti responsible for detecting the sense of hearing. |
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| Receptors sensitive to mechanical pressures such as touch, sound, or contractions. |
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| Receptors occupying a postage stamp-sized area in the roof of each nasal cavity with the ability to sense smell. |
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Definition
| The organ containing hearing receptors, located within the cochlear duct. |
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Definition
| The decrease in lens elasticity that accompanies aging. |
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Definition
| A gradual deterioration and atrophy of the organ of Corti leads to the loss of the ability to hear high tones and speech sounds. |
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Definition
| The condition where the pupils immediately constrict when exposed to bright light or when viewing close objects. |
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Definition
| The bending of light as light passes from one substance to another. |
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Definition
| Light sensitive layer of the eye; contains rods and cones. |
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Definition
| One of the two types of photosensitive cells in the retina. |
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Definition
| Balance concerned with changes in the position of the head. |
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Definition
| Receptors for taste on the tongue. roof of mouth, pharynx, and larynx. |
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