7 Audition, Body And Chemical Senses Flashcards
Hertz (Hz)
Cycles per second.
Pitch
Perceptual dimension of sound; corresponds to the fundamental frequency.
Loudness
Intensity
Timbre
Complexity
Tympanic membrane
Eardrum
Ossicle
One of three bones in the middle ear.
Malleus
Hammer
Incus
Anvil
Stapes
Stirrup
Cochlea
Snail-shaped structure of the inner ear that contains the auditory transducing mechanisms.
Oval window
Opening in the bone surrounding the cochlea that reveals a membrane, against which the baseplate of the stapes presses, transmitting sound vibrations into the fluid in the cochlea.
Organ of Corti
Sensory organ on the basilar membrane that contains the auditory hair cells.
Hair cell
Receptive cell of the auditory apparatus.
Deiter’s cell
Supporting cell phone in the organ of Corti, contains the auditory hair cells.
Basilar membrane
Membrane in that cochlea of the inner ear; contains the organ of Corti.
Tectorial membrane
Membrane located above the basilar membrane; serves as a shelf against which the cilia of the auditory hair cells move.
Round window
Opening in the bone surrounding the cochlea of the inner ear that permits vibrations to be transmitted, via the oval window, into the fluid in the cochlea.
Cilium
Hairlike appendage of a cell involved in movement or in transducing sensory information; found on the receptors in the auditory and vestibular system.
Tip link
Elastic filaments that attaches the tip of one cilium to the side of the adjacent cilium.
Insertional plaque
Point of attachment of a tip link to a cilium.
Cochlear nerve
Branch of the auditory nerve that transmits auditory information from the cochlea to the brain.
Olivocochlear bundle
Bundle of efferent axons that travel from the olivary complex of the medulla to the auditory hair cells of the cochlea.
Cochlear nucleus
One of a group of nuclei in the medulla that receives auditory information from the cochlea.
Superior olivary complex
Group of new nuclei in the medulla; involved with auditory functions, including localization of the source of sounds.