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24 Cards in this Set
- Front
- Back
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What is another name for earwax?
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Cerumen
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What is another term for ear canal?
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External auditory meatus
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What is the function of the external ear?
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To gather sound waves and conduct them into the tympanic membrane.
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What does the tympanic membrane separate?
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The external ear from the middle ear.
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What portion of the ear amplifies sound waves in preparation for the transmission of those waves from air to a fluid environment?
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The middle ear
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What are the three ossicles(small bones)?
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1. Malleus
2. Incus 3. Stapes These are all located in the middle ear. |
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Name the two connections between the middle and inner ear.
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1. Oval window
2. Round window |
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What spiral-shaped structures contains the receptor cells for hearing?
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The cochlea
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What structures are included in the vestibular apparatus?
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Semicircular canals, utricle, and saccule.
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What are all the structures in the vestibular apparatus important for?
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Equilibrium
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What nerve contains the afferents for both hearing and equilibrium?
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Vestibulocochlear nerve
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What structure helps maintain pressure in the middle ear,preventing your ear drum form bursting?
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Eustachian tube
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What are the functions of semicircular ducts?
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Rotational movement and dynamic equalibrium.
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What structures are important for static equilibrium?
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1. Utricle
2. Saccule 3. Vestibular ganglia 4. Vestibular nerve |
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What detects acceleration up and down (vert.) and what detects accelertation forward and backward(horiz.)?
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a. Saccule
b. Utricle |
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What two nerves fuse to form the vestibulocochlear nerve?
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Cochlear and vestibular nerve
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What depends on frequency?
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Pitch (tone)
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What depends on amplitude?
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Intensity (loudness)
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What are embedded into the tectorial membrane and are the receptors for sound?
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Hair cells (Stereocilia)
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What hair cells change the length in response to MP enabling sensitivity to intensity and pitch?
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Outer hair cells
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What are cells aid in sound transduction?
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Inner hair cells
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What are the two types of deafness?
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Conductive and sensorineural
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Which type of deafness is associated with problems in the external and middle ear?
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Conductive
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Sensorineural deafness is associated with problems in what section of the ear?
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Inner ear
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