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Q: The outer ear system results in a net gain of approximately how many dB at 2,000 Hz? a. 20b. 40 c. 60d. None of the above
Q: The frequency region that is most enhanced by the outer ear is a. 20 Hz to 20,000 Hz.b. 0.02 KHz to 20 KHz. c. 1,500 Hz to 8,000 Hz.d. none of the above.
Q: Because the outer ear has no active elements, a. it can serve as an amplifier but not a filter. b. it can serve as both filter and amplifier. c. it can process only passive sounds. d. it can serve as a filter but not an amplifier.
Q: The outer ear can be viewed predominantly as a. a vestigial structure that is no longer needed. b. a collector of sound. c. a musculotendinous structure suspended by ligaments. d. a signal synthesizer.
Q: The human ear has a frequency range of approximately a. 10 octaves.b. 10 decibels. c. 10 Newtons.d. none of the above.
Q: What is the structure of the tympanic membrane?
Q: What is the sequence of events that result in otitis media with effusion?
Q: What causes otitis externa, and why is it so painful?
Q: What are the three major structures that compose the ear?
Q: Each (outer/inner) ____________________ hair cell shares innervation with as many as 10 other hair cells.
Q: Each (outer/inner) ____________________ hair cell receives innervation from as many as 10 VIII nerve fibers.
Q: There are approximately (number) ____________________ outer hair cells.
Q: There are approximately (number) ____________________ inner hair cells.
Q: The cilia of the ____________________ hair cells are embedded within the tectorial membrane.
Q: The hair cells are invested with ____________________ that protrude through the cuticular plate.
Q: The outer and inner hair cells are separated by the ____________________.
Q: There is/are ____________________ row(s) of inner hair cells.
Q: There is/are ____________________ row(s) of outer hair cells.
Q: The ____________________ is the sensory organ for hearing.
Q: The ____________________ are the sensory organ for the vestibular system.
Q: The fluid found within the scala tympani is termed ____________________.
Q: The fluid found within the scala media is called ____________________.
Q: The region through which the scala tympani and scala vestibuli communicate in life is known as the ____________________.
Q: The scala ____________________ and scala tympani are separated by the basilar membrane.
Q: The scala ____________________ and scala media are separated by Reissner's membrane.
Q: The scala ____________________ houses the sensory organ for hearing.
Q: The scala ____________________ communicates with the vestibule.
Q: The VIII vestibulocochlear nerve passes within the _________________________ before entering the cranial cavity.
Q: The ____________________ is the core of the osseous labyrinth.
Q: The cochlea completes approximately ____________________ turns from base to apex.
Q: The ____________________ semicircular canal senses head movement roughly within the frontal plane.
Q: The ____________________ semicircular canal senses movement roughly within the transverse plane of the body.
Q: The osseous cochlea is divided into two incomplete chambers by the ____________________.
Q: The oval window opens into the inner ear chamber known as the ____________________.
Q: The Eustachian tube courses from the middle ear space to open into the ____________________.
Q: The ____________________ window separates the middle ear space and scala vestibuli.
Q: The ____________________ window separates the middle ear space and the scala tympani.
Q: The ____________________ is a landmark of the middle ear that is created by the basal turn of the cochlea.
Q: The tensor tympani muscle is innervated by the (name and number) ____________________ cranial nerve.
Q: The ____________________ muscle arises from the anterior wall of the middle ear.
Q: The stapedius muscle is innervated by the (name and number) ____________________ cranial nerve.
Q: The ____________________ muscle acts to restrain movement of the tympanic membrane.
Q: The ____________________ muscle acts to restrain movement of the footplate of the stapes.
Q: The ____________________ muscle is embedded within the bone of the posterior wall of the middle ear.
Q: The footplate of the stapes is held in the oval window by the ____________________ ligament.
Q: The ____________________ of the stapes resides within the oval window of the inner ear.
Q: The stapes articulates with the ____________________ process of the incus.
Q: The ____________________ of the incus articulates with the head of the malleus.
Q: The ____________________ of the malleus extends into the epitympanic recess of the middle ear.
Q: The ____________________ is the largest of the ossicles.
Q: The (specific bone) ____________________ articulates directly with the tympanic membrane.
Q: The tympanic membrane is slightly (concave/convex) ____________________ when viewed from the external auditory meatus.
Q: The ____________________ of the tympanic membrane marks the most distal point of attachment of the tympanic membrane to the malleus.
Q: The ____________________ layer of the tympanic membrane is continuous with the epithelium of the external auditory meatus.
Q: The ____________________ is between the helix and antihelixes.
Q: The auricle is also known as the ____________________.
Q: The ____________________ of the outer ear aids in localization.
Q: The ____________________ serves as a collector of sound.
Q: Because the ear converts acoustical energy to electrochemical energy, it is termed a ____________________.
Q: ____________________ refers to the processes associated with hearing.
Q: The head of the malleus a. is the point of articulation with the incus. b. projects into the epitympanic recess. c. a & b d. none of the above.
Q: The malleus a. is also called the manubrium. b. attaches to the round window by means of tiny ligaments. c. is lateral to the incus. d. none of the above.
Q: The ossicles a. act as an impedance-matching device b. provide the means of communicating sound from the outer ear to the inner ear. c. are the smallest bones of the body. d. a & b e. a, b, & c
Q: The ossicles of the middle ear are a. the densest bones of the body. b. actually made of cartilage that has been infused with potassium ions. c. embryologically related to the atlas and axis of the vertebral column. d. a & b e. none of the above.
Q: The chorda tympani a. is a blood vessel that first surfaces in the external auditory meatus and passes into the middle ear space at the inferior margin of the tympanic membrane. b. is a branch of the VII facial nerve. c. can sometimes be seen through the superior tympanic membrane during otoscopy. d. a & b e. b & c
Q: The pars flaccida is a. in the superior quadrant of the tympanic membrane. b. between the posterior and anterior malleolar folds. c. the most flaccid portion of the tympanic membrane. d. a & b e. a, b, & c
Q: The pars flaccida is a. the most flaccid portion of the external auditory meatus. b. a portion of the eardrum with the least fibrous tissue. c. another name for the umbo. d. none of the above.
Q: The tympanic membrane is a. slightly concave as viewed from the ear canal. b. slightly convex as viewed from the ear canal. c. relatively immobile. d. none of the above.
Q: Manubrium means a. hammer. b. handle. c. hand. d. hard.
Q: The umbo a. marks the most distal point of attachment of the manubrium malli. b. is the term for the deep sounds processed specifically by the tympanic membrane. c. marks the most medial point of attachment of the manubrium malli. d. none of the above.
Q: The tympanic membrane is a. richly invested with osseous components. b. about 55 mm2 in area. c. deep to the ossicular chain. d. none of the above.
Q: The epithelial lining of the external auditory meatus a. continues as both the superficial and deep layers of the tympanic membrane. b. relies upon secreting epithelial cells of the middle ear for lubrication. c. continues as the superficial layer of the tympanic membrane. d. none of the above.
Q: Which of the following marks the boundary between the outer and middle ears? a. Tympanic membrane b. Ear drum c. Isthmus d. Footplate of stapes (and oval window) e. a & b
Q: Another name for earwax is a. cementum. b. centrum. c. cenemon. d. cerumen.
Q: A speculum is a. a small patch of dirt or cerumen within the ear canal. b. another name for eyeglasses. c. a device used to look into cavities. d. none of the above.
Q: The isthmus is a. lateral to the tragus on the pinna. b. a constriction in the external auditory meatus. c. about 5 mm from the tympanic membrane. d. a & b e. b & c
Q: The external auditory meatus a. is roughly S-shaped. b. takes a turn inferiorly at the junction of the cartilaginous and bony framework. c. is slightly constricted at the margin of the bony and cartilaginous framework. d. a & b e. a, b, & c
Q: The external auditory meatus a. serves the same function as the internal auditory meatus. b. has bone deep to two-thirds of its epithelial tissue. c. has cartilage deep to one-third of its epithelial tissue. d. b & c e. a, b, & c
Q: The external auditory meatus is a. approximately 7 mm in diameter. b. approximately 1.5 cm long from the base of the concha to the tympanic membrane. c. the ear canal. d. a & b e. a, b, & c
Q: The lobule is a. the noncartilaginous region in the inferior aspect of the pinna. b. the cartilage frame of the pinna. c. inferior to the cone of light on the tympanic membrane. d. none of the above.
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