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38 Cards in this Set

  • Front
  • Back
Q: CNs for Speech and Swallowing
V, VII, IX, X, XI, XII
Q: CN for Smell
I
Q: CNs for Vision
II, III, IV, VI
Q: CN for Hearing
VIII
Q: Pathway of CN I
Mucous membrane of nose -> olfactory bulb -> olfactory cortex and other areas for automatic and emotional responses to olfactory stimulation
Q: Where does CN III originate?
level of superior colliculus (midbrain)
Q: Where does CN IV originate?
nucleus at level of inferior colliculus
Q: Where does CN VI originate?
nucleus on floor of 4th ventricle
Q: What does CN III innervate?
extraocular muscles to move the eyeball and a visceral component responsible for pupil constriction
Q: What does CN IV innervate?
superior oblique muscles of the eyes
Q: What does CN VI allow for?
lateral movements of the eyeballs
Q: What problems can damage to CN III cause?
ptosis (= droopy eyelid), abduction and downward positioning, dilated pupils
Q: What can damage to CN IV cause?
diplopia (= double vision)
Q: What can damage to CN VI cause?
impaired lateral tracking
Q: Of which parts does CN VIII consist?
vestibular nerve and cochlear / acoustic nerve
Q: Where do vestibular and cochlear nerve project to?
Vestibular: cerebellum & vestibular nuclear complex

Cochlear: auditory cortex via complex pathways
Q: What type of nerve is CN VIII?
Special somatic sensory
Q: What are branchial arches?
They are the embryonal structures from which some of the cranial nerves (V, VII, IX, X) develop.
Q: GSE
Activates skeltal, extraocular and glossal muscles (= muscles derived from somites)
Q: GSA
Mediates sensory information from somatic muscles, skin, ligaments and joints
Q: GVE
Projects to muscles of viscreal organs, including papillary constriction, gland secretion and regulation of heart and tracheal muscles
Q: GVA
Mediates sensory innervation from visceral organs, including larynx, pharynx and abdomen
Q: SSE
doesn't exist
Q: SSA
Mediates special sensation of vision from retina and of audition and equilibrium from inner ear
Q: SVE/BE
Projects to muscles of face, palate, mouth, pharynx and larynx; does not include eye and tongue muscles
Q: SVA
Mediates visceral sensations of taste from tongue and of olfaction from nose
Q: In what type of structures are the cranial nerve nuclei organized in the brainstem?
In three motor columns and three sensory columns
Q: Motor nuclei columns from left to right
Branchial (SVE), parasympathetic (GVE), somatic (GSE)
Q: Sensory nuclei columns from left to right
Visceral (SVA & GVA), general somatic (GSA), special somatic (SSA)
Q: Which CNs are special somatic sensory?
I - olfaction
II - vision
VIII - hearing and vestibular sensation
Q: Which CNs are somatic motor?
III - extraocular muscles
IV - superior oblique muscle (depression and intorsion of eye)
VI - lateral rectus muscle (abduction of eye)
XII - intrinsic muscles of tongue
Q: Which CNs are branchial motor?
V - muscles of mastication
VII - facial expression
IX - stylopharyngeus muscle
X - pharyngeal & laryngeal muscles
XI - sternomastoid & upper trapezius
Q: Which CNs are parasympathetic?
III - pupil constriction
VII - lacrimal & salivary (except parotid) glands
IX - parotid gland
Q: Which CNs are visceral sensory?
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
Q: Which CNs are general somatic sensory?
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
Q: Which functions carries the trigeminal nerve?
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
Q: Which different divisions of CN V are there?
Ophthalmic
Maxillary
Mandibular
Q: Which muscles are related to CN V?
temporalis muscle
tensor tympani muscle
masseter muscle
anterior belly of digastric muscle