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VW Cranial Nerves

IS-B1-Cranial Nerves

QuestionAnswer
Which bone does CN1 run through? Ethmoid
Which passage does CN1 run through? Cribriform plate
Where is CN II on the surface of the brain? Lateral geniculate nucleus
What two structures are associated with CN II? Optic Chiasm and Optic Tract
any muscles that have the name tensor in them will be innervated by what? CN V3
any muscle with the word palate in it will be innervated by what CN? CN X
any muscle with glossus will be innervated by what CN? CN XII
What bone does CN II run through? Sphenoid bone
What passage does CN II run through? Optic canal
What is the target organ for CN I? Epithelium of nasal walls
What is the target organ for CN II? Retina
What is the course in the cranial cavity for CN III? interpeduncular fossa - cavernous sinus
What bone does CN III go through? Sphenoid bone
What passage does CN III go through? Superior Orbital Fissure
What parasympathetic ganglion is associated with CN III? Ciliary Ganglion
What are the principal branches of CN III? Inferior and Superior divisions
What are the target organs of CN III? Extraocular muscles (excluding superior oblique and lateral rectus), ciliary body and constrictor pupillae muscles (paras)
What are the functions associated with CN III? Somatic motor and parasympathetic
Ptosis of superior palpebrum or pupillary light reflex impairment are physical examples of a lesion on which CN? CN III
Where does CN IV exit the brain? Posterior Midbrain
What course does the CN IV take in the cranial cavity? Tentorium cerebelli, cavernous sinus
What bone does CN IV go through? Sphenoid Bone
What passage does CN IV go through? Superior orbital fissure
What is the target organ for CN IV? superior oblique muscle only
What is the function associated with CN IV? Somatic motor
Where does CN V exit the brain? Middle cerebellar peduncle of the pons
In what cranial fossa does CN V exit the brain? Middle Cranial Fossa
Where does CN V1 travel besides the middle cranial fossa? cavernous sinus
Through what bone do all 3 branches of the CN V pass? Sphenoid bone
What passage does CN V1 go through? Superior orbital fissure
What passage does CN V2 go through? Foramen rotundum
What passage does CN V3 go through? Foramen ovale
True or False - the CN V has a sensory ganglion associated with it? If so, what is its name? Trigeminal Sensory Ganglion. True.
What are the target organs of CN V1? orbit, eye, superior palpebrum and forehead
What are the target organs of CN V2? nasal cavity, upper teeth, gingiva and cheek
What are the target organs of CN V3? oral cavity, lower teeth, face, muscles of mastication
What are the functions of the three principle branches of CN V? V1 and V2 are sensory only. V3 is sensory and somatic motor
Where does CN VI leave the brain? Pontomedullary junction
What bone and passage does CN VI go through? Sphenoid bone, superior orbital fissure
What target organ does CN VI innervate? Lateral rectus muscle
What is the function of CN VI? Somatic Motor
Where does CN VII leave the brain? Pontomedullary junction
What bone and passage does CN VII go through? temporal bone and internal auditory meatus
In what fossa does the CN VII go through? Posterior Cranial Fossa
What extracranial course does CN VII go through? Parotid gland and subcutaneous tissue of the face, floor of sphenoid sinus. Pterygopalatine fossa, nasal cavity and orbit.
What ganglions of what type belong to CN VII? Geniculate ganglion - general sensory Pterygopalatine ganglion - parasympathetic Submandibular ganglion - parasympathetic
What are the principle branches of CN VII? Greater petrosal, Nerve to stapedius, temporal, zyogmatic, buccal, marginal mandibular and cervical nerves.
What are the target organs of CN VII? muscles of facial expression, lacrimal gland, tongue
What are the functions of CN VII? somatic motor, parasympathetic, special sensory taste and general sensory
Where does the CN VIII leave the brain? Pontomedullary junction
What bone and passage does the CN VIII go through? Temporal bone, internal auditory meatus
What are the principle branches of the CN VIII? vestibular and cochlear
What are the target organs of CN VIII? Vestibular apparatus of inner ear, cochlea
WWhere does the CN IX leave the brain? Medulla
What bone and passage does the CN IX go through? Temporal bone, jugular foramen
Does the CN IX have a sensory or autonomic ganglion associated and if so, name them and their type. superior and inferior sensory ganglia (general and special sensory) and Otic Ganglion - parasympathetic
What are the target organs of CN IX? stylopharyngeus muscle, parotid gland, tongue, middle ear, pharyngeal wall.
What are the functions associated with CN IX? somatic motor, parasympathetic, taste and general sensory
Where does CN X come out of the brain? medulla
What bone and passage does the CN X go through? between petrous temporal bone and occipital bone. Jugular foramen
Does CN X have sensory or autonomic ganglion associated and if so, name them and their type. superior and inferior sensory ganglia (general and special sensory) and distributed parasympathetic ganglia
What are the target organs of the CN X? head and neck muscles, pharyngeal and laryngeal, and organs.
What are the functions of CN X? somatic motor, parasympathetic, taste, non-conscious visceral sensations.
Where does CN XI come out of the brain? Trick question - it's from the spinal cord.
What course does CN XI take on its way into the cranium? vertebral canal, foramen magnum and posterior cranial fossa
What bone and passage does the CN XI go through? between petrous portion of temporal bone and occipital bone. Jugular foramen
What are the functions associated with CN XI? somatic motor - contralateral head rotation and ipsilateral shoulder elevation
Where does the CN XII leave the brain? medulla
What bone and passage does the CN XII go through? occipital bone, hypoglossal canal
What is the target organ of the CN XII? The tongue, genioglossus, etc. all the "glossus" muscles.
What is the function of the CN XII? somatic motor
What is injured when the tongue deviates toward the paralyzed side upon protrusion? CN XII
Created by: cherubicsiren