LAB 7 cranial nerves Flashcards
mnemonic devise for cranial nerves
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cranial nerves
I Olfactory, II Optic, III Oculomotor, IV Trochlear, V Trigeminal, VI Abducens, VII Facial, VIII Vestibulocochlear, IX Glossopharyngeal, X Vagus, XI Accessory, XII Hypoglossal
foramina for olfactory nerve I
olfactory foramina on cribriform plate of ethmoid bone
foramina for optic nerve II
optic canal of sphenoid bone
foramina for oculomotor nerve III
superior orbital fissure of sphenoid bone
foramina for trochlear nerve IV
superior orbital fissure of sphenoid bone
foramina for opthalmic nerve V1
superior orbital fissure of sphenoid bone, supraorbital foramen of frontal bone
foramina for maxillary nerve V2
foramen rotundum of sphenoid bone, inferior orbital fissure of sphenoid bone, infraorbital foramen of maxilla
foramina for mandibular nerve V3
foramen ovale of sphenoid bone, mandibular foramen of mandible, mental foramen of mandible
foramina for abducens nerve VI
superior orbital fissure of sphenoid bone
foramina for facial nerve VII
internal acoustic meatus of temporal bone, stylomastoid foramen of temporal bone
foramina for vestibulocochlear nerve VIII
internal acoustic meatus of temporal bone
foramina for glossopharyngeal nerve IX
jugular foramen of temporal and occipital bones
foramina for vagus nerve X
jugular foramen of temporal and occipital bones
foramina for accessory nerve XI
jugular foramen of temporal bone and occipital bones, foramen magnum of occipital bone
foramina for hypoglossal nerve XII
hypoglossal canal of occipital bone
mnemonic devise for type of innervation each cranial nerve provides (Sensory, Motor, Both)
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what does olfactory nerve I innervate?
sensory for smell
what does optic nerve II innervate?
sensory for sight
what does oculomotor nerve III innervate?
motor for 4 of 6 extrinsic muscles of the eye; parasympathetic to sphincter of pupil and ciliary muscle of lens
what does trochlear nerve IV innervate?
motor for SO eye muscle
what does opthalmic nerve V1 innervate?
sensory to cornea, nasal mucosa, lacrimal gland, skin of anterior scalp, upper eyelid and nose
what does maxillary nerve V2 innervate?
sensory to skin of face, oral cavity and upper teeth
what does mandibular nerve V3 innervate?
sensory to skin of lower face, lower teeth, and general sensation to anterior 2/3 of tongue; motor to muscles of mastication
what does abducens nerve VI innervate?
motor to LR muscle of eye
what does facial nerve VII innervate?
motor to muscles of facial expression; sensory to anterior 2/3 of tongue for taste; parasympathetic to lacrimal, mandibular and sublingual glands
what does vestibulocochlear nerve VIII innervate?
sensory for equilibrium and hearing
what does glossopharyngeal nerve IX innervate?
sensory to pharynx and posterior 1/3 of tongue; motor to stylopharyngeus muscle; parasympathetic to parotid gland
what does vagus nerve X innervate?
motor and sensory to pharynx and larynx, motor and sensory to structures in thoracic and abdominal cavities; parasympathetic to thoracic and abdominal viscera
what does accessory nerve XI innervate?
motor to trapezius and sternocleidomastoid muscles
what does hypoglossal nerve XII innervate?
motor to muscles of tongue
