Chap 34 key terms Flashcards
Auricle
The outside part of the ear, made of cartilage and covered with skin.
Cerumen A wax-like substance produced by glands in the ear canal; also called earwax
Choroid
The middle layer of the eye, which contains the iris, the ciliary body, and most of the
eye’s blood vessels.
Cochlea
A spiral-shaped canal in the inner ear that contains the hearing receptors
Conjunctiva
The protective membrane that lines the eyelid and covers the anterior of the sclera,
or the white of the eye
Cornea
A transparent area on the front of the outer layer of the eye that acts as a window to let
light into the eye
Eustachian tube
An opening in the middle ear, leading to the back of the throat, that helps
equalize air pressure on both sides of the eardrum.
External auditory canal
canal Canal that carries sound waves to the tympanic membrane; commonly
called the ear canal.
Gustatory cortex
An area of the brain that is responsible for interpreting taste sensations by
integrating information from the taste cells with other information to provide a more complete
interpretation
Labyrinth
The inner ear
Lacrimal apparatus
A structure that consists of the lacrimal glands and nasolacrimal ducts
Organ if Corti
The organ of hearing, located within the cochlea of the inner ear
Ossicles
Small bones; specifically, one of the bones of the tympanic cavity or middle ear.
Oval window
The beginning of the inner ear
Papillae
The “bumps” of the tongue in which the taste buds are found
Refraction
The bending of light by the cornea, lens, and eye fluids to focus light onto the retina
Retina
The inner layer of the eye; contains light-sensing nerve cells
Semicircular canals
Structures in the inner ear that help a person maintain balance; each of the
three canals is positioned at right angles to the other two
Sensory adaption
A process in which the same chemical can stimulate receptors only for a limited amount of time until the receptors eventually no longer respond to the chemical
Tympanic
membrane A fibrous partition located at the inner end of the ear canal and separating
the outer ear from the middle ear; also called the eardrum.