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38 Cards in this Set
- Front
- Back
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the outer most ring of the ear is called the...
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helix
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the fold the points lateral from the external ear canal is called...
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targus
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the part of the ear that is immediately superior to the opening of the external ear canal is called...
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concha
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blood supply to the auricle comes from what branches of what arteries
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superficial temporal and posterior auricular arteries
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what nerves supply innervation to the auricle
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great auricular and auriculotemporal
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which direction should the auricle be pulled to straighten the auditory meatus
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up and backward
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what are the glands that make ear wax (cerumen)
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ceruminous glands
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the auditory meatus is innervated mostly by the auriculotemporal nerve, but a small part near the tympanic membrane is supplied by...
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vagus
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what are the two spaces that the middle ear is divided into
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tympanic cavity and epitympanic recess
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what is the thin plate of bone called that forms the roof of the middle ear
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tegmen tympani
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the floor of the middle ear has a bump formed by...
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internal jugular vein
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the lateral wall of the middle ear is formed mostly by the...
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tympanic membrane
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what color is the tympanic membrane normally
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pearly grey
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the tympanic membrane is concave laterally and the depression at the apex is called the ...
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umbo
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the superior part of the tympanic membrane lacks connective tissue and is called...
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flaccid part
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the lateral wall has a bulge formed by the basal coil of the cochlea called the ___
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promonotory
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the promontory on the medial wall is covered by...
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tympanic pexus (glossopharyngeal nerve-will recombine to form the lesser petrosal nerve)
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the ___ window lies above and posterior to the promontory and the ___ window lies below and posteriorly
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oval/round
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which wall would you find the prominence of the canal for the facial nerve and lateral semicircular canal
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medial wall
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the anterior wall is formed by bone that separates it from the
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internal carotid artery
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which wall of the middle ear would have the semicanal for the tensor tympanii
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medial wall
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which wall has the opening for the pharyngotympanic tube
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anterior wall
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in the posterior wall of the middle ear is a projection called the pyramid that houses what muscle
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stapedius muscle
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in the posterior wall of the middle ear the facial nerve gives off what two nerves
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nerve to the stapedius and chorda tympani
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the long process of the incus extends downward and bends medially forming the...
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lenticular process
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the tensor tympani inserts into the handle of the ...
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malleus
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what nerve innervates the tensor tympani
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mandibular nerve
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what nerve innervates the stapedius
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facial nerve
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what type of fibers does the glossopharyngeal nerve carry
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sensory and preganglionic parasympathetic fibers
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the preganglionic fibers of the glossopharyngeal nerve will recombine after forming the tympanic plexus to form what nerve
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lesser petrosal nerve
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what nerve carries taste fibers to the anterior 2/3 of the tongue and preganglionic parasympathetic fibers that synapse in the submandibular ganglion
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chorda tympani
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the greater petrosal nerve comes from what ganglion
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geniculate ganglion (and then heads to pterygopalatine ganglion)
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what two organs are found in the inner ear
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cochlea and vestibular apparatus
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the scala vestibuli begins at the ___ window, spirals to the apex, through narrow helicotrema, and becomes the scala tympani which terminates at the ___ window
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oval/round
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the parts of the cochlea are filled with...
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perilymph
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the cochlear duct is filled with...
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endolymph
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the cochear duct contains what organ for hearing
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spiral organ of corti
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the vestibular organ consists of what three parts...
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utricle, saccule, and 3 semicircular canals
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