| A | B |
|---|
| adaptation | awareness of sensation diminishes despite continuing stimulus |
| after-image | sensation remains in consciousness even sfter stimulus has stopped |
| aqueous humor | tissue fluid of the eye within interior cavity of eyeball, nourishes lens and cornea |
| cochlea | portion of inner ear that contains receptors for hearin in the Organ of Corti |
| Cones | sensory receptors in cornea of eye that detect colors |
| Conjunctiva | mucous membrane that lines the eyelids and covers white of eye |
| Contrast | previous sensation affects the perception of current sensation |
| Cornea | transparent, anterior portion of the sclera of eye; first structure that refracts light rays htat enter eye |
| Eustachian Tube | air passage between middle ear cavity and nasopharynx |
| Iris | made of 2 sets of smooth muscle fibers that regulate the size of pupil |
| Lacrimal Glands | secrete tears, located upper, outer corner of each eyeball |
| Olfactory Receptors | sensory receptors in uppernasal cavities, detect vaporized chemicals providing smell |
| Organ of Corti | structure in cochlea of inner ear that contains receptors for hearing |
| Projection | sensation is felt in area where receptors are stimulated |
| Referred Pain | visceral pain that is projected and felt as cutaneous pain |
| Retina | inner-most layer of eyeball; contains photoreceptors, rods, and cones |
| Rhodopsin | chemical in rods of retina that breaks down when light waves strike it-chemical change initiates nerve impulse |
| Rods | sensory receptors in retina that detect presence of light |
| Sclera | outermost layer of eyeball made of fibrous connective tissue, anterior portion is translucent cornea |
| Semicircular Canals | 3 oval canals in innner ear that contain receptors that detect motion |
| Tympanic Membrane | eardrum--membrane that is stretched across end of ear canal; vibrates when sound waves strike it |
| Vitreous Humor | Semi-Solid, gelatinous substance in posterior cavity of eyeball; keeps retina in place |
