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38 Cards in this Set
- Front
- Back
Q: CNs for Speech and Swallowing
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V, VII, IX, X, XI, XII
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Q: CN for Smell
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I
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Q: CNs for Vision
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II, III, IV, VI
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Q: CN for Hearing
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VIII
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Q: Pathway of CN I
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Mucous membrane of nose -> olfactory bulb -> olfactory cortex and other areas for automatic and emotional responses to olfactory stimulation
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Q: Where does CN III originate?
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level of superior colliculus (midbrain)
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Q: Where does CN IV originate?
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nucleus at level of inferior colliculus
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Q: Where does CN VI originate?
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nucleus on floor of 4th ventricle
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Q: What does CN III innervate?
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extraocular muscles to move the eyeball and a visceral component responsible for pupil constriction
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Q: What does CN IV innervate?
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superior oblique muscles of the eyes
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Q: What does CN VI allow for?
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lateral movements of the eyeballs
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Q: What problems can damage to CN III cause?
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ptosis (= droopy eyelid), abduction and downward positioning, dilated pupils
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Q: What can damage to CN IV cause?
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diplopia (= double vision)
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Q: What can damage to CN VI cause?
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impaired lateral tracking
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Q: Of which parts does CN VIII consist?
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vestibular nerve and cochlear / acoustic nerve
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Q: Where do vestibular and cochlear nerve project to?
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Vestibular: cerebellum & vestibular nuclear complex
Cochlear: auditory cortex via complex pathways |
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Q: What type of nerve is CN VIII?
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Special somatic sensory
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Q: What are branchial arches?
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They are the embryonal structures from which some of the cranial nerves (V, VII, IX, X) develop.
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Q: GSE
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Activates skeltal, extraocular and glossal muscles (= muscles derived from somites)
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Q: GSA
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Mediates sensory information from somatic muscles, skin, ligaments and joints
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Q: GVE
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Projects to muscles of viscreal organs, including papillary constriction, gland secretion and regulation of heart and tracheal muscles
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Q: GVA
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Mediates sensory innervation from visceral organs, including larynx, pharynx and abdomen
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Q: SSE
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doesn't exist
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Q: SSA
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Mediates special sensation of vision from retina and of audition and equilibrium from inner ear
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Q: SVE/BE
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Projects to muscles of face, palate, mouth, pharynx and larynx; does not include eye and tongue muscles
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Q: SVA
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Mediates visceral sensations of taste from tongue and of olfaction from nose
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Q: In what type of structures are the cranial nerve nuclei organized in the brainstem?
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In three motor columns and three sensory columns
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Q: Motor nuclei columns from left to right
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Branchial (SVE), parasympathetic (GVE), somatic (GSE)
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Q: Sensory nuclei columns from left to right
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Visceral (SVA & GVA), general somatic (GSA), special somatic (SSA)
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Q: Which CNs are special somatic sensory?
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I - olfaction
II - vision VIII - hearing and vestibular sensation |
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Q: Which CNs are somatic motor?
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III - extraocular muscles
IV - superior oblique muscle (depression and intorsion of eye) VI - lateral rectus muscle (abduction of eye) XII - intrinsic muscles of tongue |
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Q: Which CNs are branchial motor?
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V - muscles of mastication
VII - facial expression IX - stylopharyngeus muscle X - pharyngeal & laryngeal muscles XI - sternomastoid & upper trapezius |
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Q: Which CNs are parasympathetic?
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III - pupil constriction
VII - lacrimal & salivary (except parotid) glands IX - parotid gland |
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Q: Which CNs are visceral sensory?
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SPECIAL
VII - taste anterior 2/3 of tongue IX - taste posterior 1/3 X - taste epiglottis GENERAL IX - chemo- & baroreceptors of carotid body X - chemo- & baroreceptors of aortic arch |
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Q: Which CNs are general somatic sensory?
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V - pain, temp. etc from face, mouth, anterior 2/3 of tongue, nasal sinuses, meninges
VII - small region near auditory meatus IX - middle ear, region near external auditory meatus, pharynx, posterior 1/3 of tongue X - pharynx, meninges, small region near external auditory meatus |
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Q: Which functions carries the trigeminal nerve?
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GENERAL SOMATIC SENSORY
touch, pain, temperature, joint position, vibration for face, mouth, anterior 2/3 of tongue, nasal sinuses, meninges BRANCHIAL MOTOR muscles of mastication |
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Q: Which different divisions of CN V are there?
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Ophthalmic
Maxillary Mandibular |
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Q: Which muscles are related to CN V?
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temporalis muscle
tensor tympani muscle masseter muscle anterior belly of digastric muscle |