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Anatomy Ch 9
The Senses
| Term | Definition |
|---|---|
| adaption | the characteristic of sensations in which awareness of the sensation diminishes despite a continual stimulus |
| after-image | the characteristic of sensations in which a sensation remains in the consciousness even after the stimulus has stopped |
| aqueous humor | the tissue fluid of the eye within the anterior cavity of the eyeball |
| cochlea | the snail-shaped portion of the inner ear that contains the receptors for hearing in the organ of Corti |
| cones | the sensory receptors in the retina of the eye that detect colors |
| conjunctiva | the mucous membrane that lines the eyelids and covers the white of the eye |
| contrast | the characteristic of sensations in which a previous sensation affects the perception of a current sensation |
| cornea | the transparent anterior portion of the sclera of the eye |
| Eustachian tube | the air passage between the middle ear cavity and the nasopharynx |
| iris | the colored part of the eye |
| lacrimal glands | the glands that secrete tears |
| olfactory receptors | the sensory receptors in the upper nasal cavities that detect vaporized chemicals, provides a sense of smell |
| organ of corti | the structure in the cochlea of the inner ear that contains receptors for hearing |
| projection | the characteristic of sensations in which the sensation is felt in the area where the receptors were stimulated |
| referred pain | visceral pain that is projected and felt as cutaneous pain |
| retina | the innermost part of the eyeball |
| rhodopsin | the chemical in the rods of the retina that breaks down when light waves strike it |
| rods | the sensory receptors in the retina of the eye that detect the presence of light |
| sclera | the outermost layer of the eyeball |
| semicircular canals | three oval canals in the inner ear that contain the receptors that detect motion |
| tympanic membrane | eardrum |
| vitreous humor | the semi-solid, gelatinous substance in the posterior cavity of the eyeball |