Term
| Is C.N. VIII sensory, motor, or mixed? |
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Definition
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Term
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Definition
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Term
| Ganglion for the Cochlear nerve |
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Definition
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Term
| Cell type of ganglion of Corti |
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Definition
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Term
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Definition
| In the osseous spiral lamina of the cochlea. |
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Term
Organ of Corti
Peripheral processes |
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Definition
(Dendrites)
extend into the lumen of the cochlea and end in relation to the cells of the organ of corti. |
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Term
Organ of Corti
Central processes |
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Definition
(axons)
pass down the modiolus, through the foramina of the tractus spiralis/central foramen to form the cochlear nerve. |
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Term
Cochlear nerve
accompanyment |
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Definition
| accompanied by vestibular N. and Facial N. through the Internal Accoustic Meatus and passes the the M.O. |
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Term
Cochlear Nerve
Nuclei of termination |
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Definition
1) Dorsal Cochlear
2) Ventral Cochlear
3) Superior Olivary N.
4) Trapezoid N.
5) Inferior Colliculous
6) Medial Geniculate body
1-4 are in M.O., 5 is in Pons, 6 is in metathalamus |
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Term
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Definition
| Medial geniculate bodies communicate with each other via this feature. |
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Term
| Cortical proections of audition are from... |
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Definition
| the medial geniculate body that end in the superior temporal gyrus (B.A. 41,42) |
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Term
| Auditory impressions are interpreted here. |
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Definition
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Term
Vestibular Nerve
Fibers arise from... |
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Definition
| Bipolar neurons in Scarpa's (vestibular) Ganglion |
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Term
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Definition
| 3 bundles of dendrites originating from Scarpa's Ganglion that end in the labrynth. |
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Term
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Definition
Largest of Ampullary Nerves
Carries impulses from:
ampullae of the superior and lateral semicircular ducts
and the Utricle |
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Term
| The Inferior Ampullary Nerve |
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Definition
Smallest
Supplies only the saccule |
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Term
| The Posterior Ampullary N. |
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Definition
| Supplies the ampulla of the posterior semicircular duct. |
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Term
| 3 Terminal Vestibular Nuclei |
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Definition
Lateral vestibular (principle)
Superior vestibular
Medial vestibular |
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Term
| Fiber's from Dieter's, Schwalbe's, and Bechterew's nuclei pass through... |
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Definition
| the restiform body to the cerebellum. |
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Term
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Definition
decending spinal tract from cerebellum to anterior horn cells of the spinal cord.
Extrapyramidal tract, carries impulses for automatic antigravity reflexes. |
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Term
| Cortical center for the Vestibular nerve. |
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Definition
There is none!
Cerebellum is considered the brain center. |
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Term
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Definition
Auditus Externa (auricula, external canal)
Auditus Media (drum or tympanum)
Auditus Interna (labrynth) |
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Term
| The middle ear receives sympathetic fibers from... |
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Definition
| the internal carotid plexus that pass into the ear drum through the carotid (anterior) wall. |
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Term
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Definition
Supply mucous glands of the tympanum and the blood vessels of the ear drum and all its contents.
Fibers from internal carotid plexus |
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Term
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Definition
Cochlea
Vestibular aparatus |
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Term
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Definition
Inner ear:
Cochlea
Vestibular Apparatus
And blood vessels in the labrynth |
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Term
Accoustic Nerve
communications |
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Definition
| with the cavernous plexus |
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Term
Glossopharyngeal Nerve
Sensory, Motor, Mixed? |
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Definition
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Term
Glossopharyngeal Nerve
Somatic Sensory Fibers |
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Definition
Supply:
Mucous Membranes of pharynx, fauces, palatine tonsil, posterior 1/3 of tongue, and middle ear. |
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Term
Glossopharyngeal Nerve
Somatic Motor Fibers supplies |
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Definition
| Supply Stylopharyngeaus Muscle |
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Term
Glossopharyngeal Nerve
Visceromotor fibers supply |
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Definition
| Parotid and mucous glands of the posterior of the tongue and fauces. |
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Term
Glossopharyngeal Nerve
Vaso-afferent fibers |
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Definition
supply blood pressure receptor cells of the carotid sinus and chemoreceptor cells of the carotid body.
Plays role in reflex mechanism that controls cardiac output. |
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Term
Glossopharyngeal Nerve
Special Visceral Afferent Fibers |
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Definition
Carry taste sensation from the taste buds of the posterior 1/3 of the tongue.
Papillae: simplicae, fungiform, and vallate |
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Term
Glossopharyngeal Nerve
Apparent origin |
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Definition
| 3-4 rootlets from side of M.O. between olive and restiform body. |
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Term
Glossopharyngeal Nerve
Exit |
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Definition
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Term
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Definition
superior and smaller sensory ganglion of C.N. IX
May be absent
Contains gustatory neurons. |
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Term
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Definition
Sensory Ganglion of CN IX
Inferior and Larger |
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Term
Glossopharyngeal Nerve
Nuclei of termination |
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Definition
Nucleus of the spinal trigeminal tract (general sensation and nociception)
Nucleus of the tractus solitarius (visceral afferent function, gustation) |
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Term
Glossopharyngeal Nerve
Nuclei of origin |
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Definition
2 withing M.O.
Nucleus ambiguus (somatic motor nucleas for IX, X, XI. IX only for stylopharyngeus muscle)
Nucleus Salivatorius Inferioris (gives rise to the visceral secretomotor fibers for parotid gland and smaller mucous glands) |
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Term
Glossopharyngeal Nerve
Communications |
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Definition
Sympathetic communications with superior cervical ganglion and petrous ganglion.
With Vagus and Auricular nerves
With facial nerve |
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Term
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Definition
Branch of Glossopharyngeal
Arrises from petrous ganglion
Supply mucous membrain of the ear drum (sensory). |
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Term
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Definition
Branch of Glossopharyngeal N.
Carries impulses from blood pressure receptor cells of the Carotid Sinus
Chemoreception from Carotid Body.
Communicates with Vagus |
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Term
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Definition
Branch of Glossopharyngeal N.
Fibers from Petrous Ganglion
Sensory for mucous membranes of throught.
Communicates with Vagus, |
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Term
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Definition
Formed by communications from pharyngeal N., Vagus, and sympathetic nervous system.
Sympathetic Elements: Supply blood vessels and glands of throat.
Glossopharyngeal element: supply somatic sensory lining of throat (sensory gag reflex)
Vagal ellement supply muscles of throught (motor gag reflex) |
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Term
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Definition
Branch of Glossopharyngeal N.
Fubers from Nucleus Ambiguus
Supplies stylopharyngeus |
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Term
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Definition
Branch of Glossopharyngeal N.
Fibers from petrous ganglion
Supplies mucous membranes of the gauces, soft palate, and palatine tonsil |
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Term
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Definition
Branch of Glossopharyngeal Nerve
From cells in petrous ganglion and jugular ganglion.
Special visceral (taste post 1/3 of tongue)
Secretomotor fibers from otic ganglion to reach posterior lingual glands.
Cortical centers: Postcentral gyrus |
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Term
Vagus
Mixed, Motor, or just plain sensory? |
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Definition
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Term
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Definition
| 8-10 rootlets on the side of the M.O. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Contain Unipolar cells!
Jugular Ganglion
Nodose Ganglion |
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Term
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Definition
smaller and superior
Located in jugular fossa
Nerve of Arnold and recurrent meningeal nerves arise from cells here. |
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Term
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Definition
Principal Sensory Nucleus for Vagus
Larger and inferior to Jugular ganglion |
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Term
Vagus
Nuclei of Termination |
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Definition
Nucleus of the spinal trigeminal Tract
Nucleus of the tractus solitarius |
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Term
| Nucleus of the spinal trigeminal tract |
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Definition
| somatic sensory, especially pain (x) |
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Term
| Nucleus of the tractus solitarius |
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Definition
| Visceral afferent, including taste (x) |
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Term
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Definition
Nucleus ambiguus
Nucleus ala cinerea |
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Term
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Definition
(x)
gives rise to somatic motor fibers
Ventral motor nucleus of vagus |
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Term
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Definition
(x)
Parasympathetic visceral motor nucleus
Dorsal motor nucleus |
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Term
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Definition
| feature in rhomboid fossa formed by nucleus ala cinerea |
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