(Summary) Audition

Question 1

___ is the sense of hearing.

Answer 1

Audition

Question 2

___ is the height of a periodic curve measured on its vertical axis.

Answer 2

Amplitude

Question 3

___ is the number of cycles of a periodic wave per unit of time.

Answer 3

Frequency

Question 4

___ is the simpliest type of sound, characterized by a single sine wave.

Answer 4

Pure tone

Question 5

___ is completely random combinations of sound waves.

Answer 5

Noise

Question 6

___ is a unit used to express a difference in intensity between two sounds, equal to 20 times the common logarithm of the ration of two levels.

Answer 6

Decibels (dB)

Question 7

___ is characterized by the amplitude. Thus, high-amplitude waves are perceived as loud sounds while low-amplitude waves are perceived as soft sounds.

Answer 7

Loudness

Question 8

___ is characterized by the frequency. Thus, low-frequency waves are perceived as low-pitched sounds while high-frequence waves are perceived as high-pitched sounds.

Answer 8

Pitch

Question 9

___ is a unit of sound frequency equal to one cycle per second.

Answer 9

Hertz (Hz)

Question 10

___ is the wave having the lowest frequency in a complex tone.

Answer 10

Fundamental Frequency

Question 11

___ is an additional wave produced by a complex tone that is an integer multiple of the tone’s fundamental frequency.

Answer 11

Harmonic

Question 12

___ is the quality of sound that distinguish it from other sounds of the same pitch and volume.

Answer 12

Timbre

Question 13

___ are sounds at frequencies above the range of human hearing, or higher than about 20,000 Hz.

Answer 13

Ultrasound

Question 14

___ are sounds at frequencies below the range of human hearing, or lower than about 20 Hz.

Answer 14

Infrasound

Question 15

___ is the visible part of the outer ear.

Answer 15

Pinna

Question 16

___ is a tube-shaped structure in the outer ear that leads to the tympanic membrane membrane.

Answer 16

Auditory Canal

Question 17

___ is the membrane separating the outer and middle ear.

Answer 17

Tympanic Membrane

Question 18

___ is a membrane that forms the boundary between the middle and inner ear.

Answer 18

Oval Window

Question 19

___ are the bones of the middle ear.

Answer 19

Ossicles

Question 20

___ are the first three ossicles in the middle ear.

Answer 20

Malleus

Question 21

___ are the middle of three ossicles found in the middle ear.

Answer 21

Incus

Question 22

___ are the innermost of the three ossicles of the middle ear.

Answer 22

Stapes

Question 23

___ are one of two muscles of the middle ear responsible for the acoustic reflex.

Answer 23

Tensor Tympani

Question 24

___ are one of the muscles responsible for the acoustic reflexes.

Answer 24

Stapedius

Question 25

___ is the protective restriction of the movement of the tympanic membrane and the ossicles, resulting in a reduction of sound to the inner ear by a factor of 30 dB.

Answer 25

Acoustic Reflex

Question 26

___ is the fluid-filled structure of the inner ear containing auditory receptor.

Answer 26

Cochlea

Question 27

___ is one of the chambers found in the cochlea.

Answer 27

Vestibular Canal

Question 28

___ is one of the chambers found in the cochlea.

Answer 28

Tympanic Canal

Question 29

___ is the part of the cochlea most distant from the oval window.

Answer 29

Apex

Question 30

___ is the fluid found in the vestibular and
tympanic canals of the inner ear.

Answer 30

Perilymph

Question 31

___ is the fluid found in the vestibular and tympanic canals of the inner ear.

Answer 31

Cochlear Duct

Question 32

___ is the fluid found in the cochlear duct.

Answer 32

Endolymph

Question 33

___ is a membrane that separates the vestibular canal and the cochlear duct in the inner ear.

Answer 33

Reissner’s Memberane

Question 34

___ is a structure in the cochlea that separates the tympanic canal and the cochlear duct.

Answer 34

Basilar membrane

Question 35

___ is a membrane covering the end of the tympanic canal.

Answer 35

Round Window

Question 36

___ is a structure within the cochlear duct responsible for translating vibrations in the inner ear into neural messages.

Answer 36

Organ of Corti

Question 37

___ is a membrane in the inner ear that covers the top of the hair cells and is actually attached to some of them.

Answer 37

Tectorial Membrane

Question 38

___ is an auditory receptor cell located near the connection between the tectorial membrane and cochlear duct.

Answer 38

Inner Hair Cell

Question 39

___ is an auditory receptor cell located on the organ of Corti that may serve to amplify sounds.

Answer 39

Outer Hair Cell

Question 40

___ are microscopic, hairlike projections that extend from a structure.

Answer 40

Cilia

Question 41

___ is the nerve that makes contact with the hair cells of the cochlea.

Answer 41

Auditory Nerve (cranial nerve VIII)

Question 42

___ structure found in the inner ear whose axons form the auditory nerve.

Answer 42

Spiral Ganglion