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 |