Term
1) somatic sensory
2) somatic motor
3) parasympathetics
4) special sensory
5) visceral afferent
(ALL) |
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Definition
| what are the modalities of the glossopharyngeal nerve? |
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Term
1) middle ear
2) INNER TYMPANIC MEMBRANE
3) auditory tube (eustachian)
4) pharynx
5) posterior 1/3 of tongue mucosa
6) mucosa over palatine tonsil (3rd arch) |
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Definition
| what does CN IX provide somatic sensory innervation to? |
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Term
| stylopharyngeus ONLY (3rd branchial arch) |
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Definition
| what does CN IX provide somatic motor innervation to? |
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Term
| PAROTID GLAND (makes the gland work) |
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Definition
| what does CN IX provide parasympathetic innervation to? |
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Term
| taste to posterior 1/3 of tongue |
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Definition
| what does CN IX provide special sensory innervation to? |
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Term
baroception in the carotid sinus
checmoreception on the carotid body |
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Definition
| what does CN IX provide visceral afferent innervation to? |
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Term
inferior glossopharyngeal ganglia holds the cell bodies of
1) somatic sensory
2) special sensory
3) visceral afferents |
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Definition
| where are the somatic sensory cell bodies of the glossopharyngeal nerve? what else is found here? |
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Term
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Definition
| this branch of the glossopharyngeal nerve provides somatic sensation to the middle ear mucosa, mastoid air cells, and the inner surface of the tympanic membrane after splitting up in the tympanic plexus |
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Term
| tympanic nerve, goes back into the skull via the tympanic canniliculus |
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Definition
| name the first branch of the glossopharyngeal nerve, how does it get to its target? |
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Term
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Definition
| this branch of the hypoglossal nerve provides somatic sensory to the posterior 1/3 of the tongue and tonsil (among other things) |
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Term
| the "sensory part" of the pharyngeal plexus |
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Definition
| this branch of the hypoglossal n provides somatic sensory to the pharynx |
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Term
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Definition
| which glossopharyngeal ganglia is larger? |
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Term
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Definition
| what foramen does CN IX pop out the skull? |
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Term
| intense, shooting pain felt over the somatic sensory distribution of CN IX, it usually begins in the palatine tonsil or back of the pharynx and radiates to the ear |
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Definition
| how does glossopharyngeal neuralgia present(give symptoms)? |
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Term
swallowing, chewing, or protruding the tongue
cause: possibly compression of the nerve as it is crossed by vessels near its origin |
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Definition
| what illicits the pain in glossopharyngeal neuralgia? what is the suspected cause? |
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Term
| they put teflon felt between the vessel and the nerve |
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Definition
| how is glossopharyngeal neuralgia treated? |
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Term
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Definition
| name the motor branch of the glossopharyngeal nerve |
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Term
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Definition
| name the branch of CN IX that provides the special sense of taste (among other things) |
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Term
1)somatic sensory to middle ear/tympanic membrane
2) parasympathetics to parotid gland |
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Definition
| what information is carried by the tympanic nerve as it travels through the tympanic canniliculus? |
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Term
this is some wonky shit
1) CN IX out the jugular foramen
2) tympanic n. through tympanic canniliculus
3) tympanic plexus
4) lesser superficial petrosal nerve
5) through the foramen ovale
6) to the otic ganglion (SYNAPSE)
7) hops on V3 auriculotemporal nerve |
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Definition
| describe the path or parasympathetics to the parotid gland |
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Term
auriculotemporal nerve (V3) carries them after they hitch a ride from the otic ganglion
note: this nerve is also carrying somatic sensory to the parotid gland |
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Definition
| what nerve carries post-ganglioninc parasympathetics to the parotid gland? |
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Term
greater: CN 7 parasympathetics to lacrimal gland and nasal/oral mucosa
lesser: parasympathetics to parotid gland
deep: sympathetics from the IC plexus that hop over to the nerve to the pterygoid canal with CN 7 greater petrosal |
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Definition
| what do the greater and lesser superficial petrosal nerves do? the deep petrosal? |
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Term
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Definition
| what else goes through the foramen ovale with the lesser superficial petrosal nerve? |
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Term
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Definition
| what lies just below the foramen ovale deep to V3? |
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Term
visceral afferents
carotid sinus: stretch receptors to sense BP (baroreception)
carotid body: chemoreceptors to sense CO2 levels in the blood |
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Definition
| what information is carried by the nerve to the carotid sinus and the carotid body? |
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Term
1) the carotid Body is in the Bifurcation (B & B)
2) the carotid Sinus is in the Swelling (S & S) |
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Definition
| what is in the bifurcation of the carotid artery? what is in the dilated part of internal carotid right after the bifurcation? |
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Term
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Definition
| what bone are the middle and inner ear located in? |
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Term
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Definition
| this is continous with the middle ear & eustachian tube, innervated by CN 9 for somatic sensation, acts as a site of muscle attachment, and has holes lined with mucosa that may help to lighten the temporal bone, what is it? |
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Term
| lesser is more lateral, it's going to the parotid which is more lateral than the lacrimal gland(greater superficial petrosal) |
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Definition
which is more lateral? lesser superficial petrosal nerve or greater superficial petrosal nerve?
hint: what do they innervate? |
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Term
| they go in the same named hiatus (hiatus of the greater/lesser superficial petrosal nerve) |
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Definition
| how do the greater and lesser petrosal nerves go through the temporal bone? |
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Term
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Definition
| what 2 nerves travel in the internal acoustic meatus? |
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Term
| V3, nerve to tensor tympani |
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Definition
| what innervates the tensor tympani muscle? |
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Term
| the connection between the middle ear and the mastoid air cells |
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Definition
| what is the mastoid aditus? |
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Term
1) ossicles
2) lateral surface of the tympanic memrane
3) mastoid aditus
4) lesser superficial petrosal n
5) facial nerve in the facial canal & exiting the stylomastoid foramen
6) tympanic plexus on the promontory
7) tympanic n (IX)
8) stapedius (& its nerve)
9) tensor tympani
10) chorda tympani
11) oval window
12) round window |
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Definition
| what are the components of the middle ear? |
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Term
1) facial nerve in the facial canal
2) chorda tympani |
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Definition
| what 2 nerves pass through the middle ear without innervating anything? |
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Term
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Definition
| what surface of the middle ear is the mastoid aditus located on? |
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Term
| it passes superior to the handle of the malleus and superior/posterior to tensor tympani |
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Definition
| describe the course of the chorda tympani through the middle ear |
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Term
inner surface: CN IX
outer surface: CN V, VII, X |
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Definition
| describe the innervation of the tympanic membrane? |
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Term
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Definition
| what type of joints are formed between the ossicles? |
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Term
| a ligament that attaches to the lateral process |
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Definition
| what holds the malleus in place? |
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Term
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Definition
| what part of the malleus attaches to the tympanic membrane? |
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Term
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Definition
| what bone does the malleus articulate with? |
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Term
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Definition
| what limb of the incus articulates with the stapes? |
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Term
base: over the oval window
head: articulates with the long limb of the incus |
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Definition
| what does the base of the stapes rest against? the head? |
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Term
| the carotid canal with the internal carotid plexus |
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Definition
| what lies just medial to the middle ear? |
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Term
| the optic chiasm (directly inferior is the eustachain (pharyngotympanic) tube |
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Definition
| just lateral to the sphenoid sinus is the internal carotid artery and what nerve? |
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Term
| the semicanal of the tensor tympani |
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Definition
| what nerve canal lies just superior to the eustachian tube and the internal carotid artery? |
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Term
| it increases the pressure of sound waves 17 fold, but applies it over a smaller distance |
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Definition
| what does the ossicular chain do? |
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