| Question |
 |
|
| Answer |
|
|
| aqueous humor |
watery fluid that fills the anterior chamber of the eye, in front of the lens |
| auricle |
part of the ear attached to the side of the head |
| bony labyrinth |
the fluid-filled complex maze of three spaces in the temporal bone |
| cataract |
opacity of the lens of the eye |
| cerumen |
ear wax |
| ceruminous gland |
gland that produces a waxy substance called cerumen |
| chemoreceptor |
receptors that respond to chemicals and are responsible for taste and smell |
| choroid |
middle layer of the eyeball that contains a dark pigment to prevent the scattering of incoming light rays |
| cochlea |
snail shell or structure of similar shape |
| conjunctiva |
mucous membrance that lines the eyelids and covers the sclera |
| crista ampullaris |
a specialized receptor located within the semicircular canals that detects head movements |
| endolymph |
thick, clear fluid that fills the membranous labyrinth of the inner ear |
| eustachian tube |
tube that connects the throat with the middle ear to equalize air pressure on both sides of the tympanum |
| external auditory canal |
a curved tube extending from the auricle into the temporal bone, ending at the tympanic membrane |
| fovea centralis |
small depression in the macula lutea where cones are most densely packed |
| glaucoma |
disorder characterized by elevated pressure in the eye |
| gustatory cells |
cells of taste |
| hyperopia |
farsightedness |
| incus |
middle ear bone that is shaped like an anvil |
| lacrimal gland |
the glands that produce tears, located in the upper lateral portion of the orbit |
| lens |
the refracting mechanism of the eye that is located directly behind the pupil |
| malleus |
tiny middle ear bone that is shaped like a hammer |
| mechanoreceptor |
receptors that are mechanical in nature |
| membranous labyrinth |
a membranous sac that follows the shape of the bony labyrinth and is filled with endolymph |
| myopia |
nearsightedness |
| optic disc |
the area in the retina where the optic nerve fibers exit and there are no rods or cones; blind spot |
| organ of Corti |
the organ of hearing located in the cochlea and filled with endolymph |
| ossicles |
little bones found in the ears |
| papillae |
small, nipple shaped elevations |
| perilymph |
a watery fluid that fills the bony labyrinth of the ear |
| photopigments |
chemicals in retinal cells that are sensitive to light |
| photoreceptor cell |
specialized nerve cells stimulated by light |
| presbyopia |
farsightedness of old age |
| proprioceptor |
receptor located in the muscles, tendons and joints |
| pupil |
the opening in the center of the iris that regulates the amount of light entering the eye |
| refraction |
bending of a ray of light as it passes from a medium of one density to one of a different density |
| retina |
innermost layer of the eyeball |
| sclera |
white outer coat of the eyeball |
| semicircular canals |
part of the inner ear that contains a specialized receptor called crista ampullaris that generates a nerve impulse on movement of the head |
| stapes |
tiny stirrup shaped bone in the middle ear |
| tympanic membrane |
eardrum |
| vestibular nervea |
division of the vestibulocochlear nerve |
| vestibule |
located in the inner ear and is the portion adjacent to the oval window between the semicircular canals and the cochlea |
| vitreous humor |
the jellylike fluid found in the eye that is posterior to the lens |
Science Vocab 147928
