T — Hearing Flashcards
What is the vestibular sense responsible for?
A) Detecting sound frequency
B) Maintaining balance and sensing body position
C) Processing visual information
D) Transmitting pain signals
b
What happens at the pinna (auricle)?
A) It vibrates to amplify sound waves
B) It converts sound into electrical signals
C) It contains fluid for sound transmission
D) It channels sound waves into the external auditory canal
d
What structures are found in the bony labyrinth?
A) Tympanic membrane, ossicles, cochlea
B) Cochlea, vestibules, semicircular canals
C) Eustachian tube, malleus, incus
D) Pinna, external auditory canal, eardrum
b
What fluid bathes the membranous labyrinth?
A) Lymphatic fluid
B) Perilymph
C) Endolymph
D) Cerebrospinal fluid
c
Where is the inner ear located?
A) In the bony labyrinth
B) Inside the external auditory canal
C) Behind the nasal cavity
D) Between the ossicles
a
What is perilymph responsible for?
A) Suspending the membranous labyrinth in the bony labyrinth
B) Maintaining balance in the semicircular canals
C) Generating electrical impulses in the cochlea
D) Directing sound waves to the tympanic membrane
a
What is the function of the external auditory canal?
A) Converts sound waves into motion
B) Transmits electrical signals to the brain
C) Directs sound waves to the tympanic membrane
D) Vibrates in response to sound waves
c
What happens when sound waves reach the eardrum (tympanic membrane)?
A) The vestibular system adjusts balance
B) The eardrum vibrates
C) The cochlea processes sound frequency
D) The ossicles produce endolymph
b
Which sound waves have greater intensity and more amplitude?
A) Sounds transmitted through the vestibular system
B) Louder sounds
C) Higher frequency sounds
D) Lower frequency sounds
b
What do sound waves with higher frequency do?
A) Vibrate more
B) Are detected at the end of the cochlea
C) Travel only through the perilymph
D) Vibrate less
a
What are the ossicles?
A) The fluid-filled sacs in the inner ear
B) The three small bones: malleus, incus, and stapes
C) The structures responsible for maintaining balance
D) The auditory nerves in the cochlea
b
What does the Eustachian tube do?
A) Maintains balance in the semicircular canals
B) Helps detect sound vibrations
C) Connects the middle ear to the nasal cavity
D) Converts sound waves into electrical signals
c
Where are high and low-frequency sound waves detected in the cochlea?
A) High at the base, low at the end
B) Both are detected in the vestibules
C) High at the end, low at the base
D) High in the semicircular canals, low in the cochlea
a
What is basilar tuning?
A) The cochlear response to different frequencies
B) The process of balancing fluid levels in the ear
C) The mapping of the auditory pathway in the brain
D) The conversion of sound waves into endolymph movement
a
What does “contralateral” mean?
A) Acting on the same side of the body
B) Processing sound waves in the brain
C) Acting on the opposite side of the body
D) The movement of endolymph in the cochlea
c
What is the elliptical window?
A) A structure in the semicircular canals
B) The window where fluid starts flowing in the cochlea
C) A membrane that transmits sound waves to the ossicles
D) A part of the middle ear responsible for balance
b
What is the function of the circular window?
A) Opens when fluid flows in the opposite direction in the cochlea
B) Adjusts the sensitivity of the hair cells
C) Maintains pressure in the middle ear
D) Transmits sound waves from the external ear
a
What is the top of a hair cell called, and what is found on top of it?
A) Spiral ganglion; ossicles
B) Hair bundle; kinocilium
C) Endolymph sac; perilymph
D) Basilar membrane; cochlear fluid
b
What is a tip link?
A) A spring-like structure that joins kinocilia together
B) A protein that converts sound into electrical signals
C) A fluid-filled chamber in the inner ear
D) A membrane that vibrates in response to sound
a
What is tonotopical mapping?
A) The synchronization of ossicle vibrations
B) The way different frequencies are mapped in the cochlea and brain
C) The ability of the ear to detect differences in amplitude
D) The movement of fluid in the semicircular canals
b
Which ion enters the hair cell when the tip link is stretched?
A) Potassium (K+)
B) Sodium (Na+)
C) Chloride (Cl-)
D) Calcium (Ca2+)
a
