LAB 7 cranial nerves

Question 1

mnemonic devise for cranial nerves

Answer 1

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Question 2

cranial nerves

Answer 2

I Olfactory, II Optic, III Oculomotor, IV Trochlear, V Trigeminal, VI Abducens, VII Facial, VIII Vestibulocochlear, IX Glossopharyngeal, X Vagus, XI Accessory, XII Hypoglossal

Question 3

foramina for olfactory nerve I

Answer 3

olfactory foramina on cribriform plate of ethmoid bone

Question 4

foramina for optic nerve II

Answer 4

optic canal of sphenoid bone

Question 5

foramina for oculomotor nerve III

Answer 5

superior orbital fissure of sphenoid bone

Question 6

foramina for trochlear nerve IV

Answer 6

superior orbital fissure of sphenoid bone

Question 7

foramina for opthalmic nerve V1

Answer 7

superior orbital fissure of sphenoid bone, supraorbital foramen of frontal bone

Question 8

foramina for maxillary nerve V2

Answer 8

foramen rotundum of sphenoid bone, inferior orbital fissure of sphenoid bone, infraorbital foramen of maxilla

Question 9

foramina for mandibular nerve V3

Answer 9

foramen ovale of sphenoid bone, mandibular foramen of mandible, mental foramen of mandible

Question 10

foramina for abducens nerve VI

Answer 10

superior orbital fissure of sphenoid bone

Question 11

foramina for facial nerve VII

Answer 11

internal acoustic meatus of temporal bone, stylomastoid foramen of temporal bone

Question 12

foramina for vestibulocochlear nerve VIII

Answer 12

internal acoustic meatus of temporal bone

Question 13

foramina for glossopharyngeal nerve IX

Answer 13

jugular foramen of temporal and occipital bones

Question 14

foramina for vagus nerve X

Answer 14

jugular foramen of temporal and occipital bones

Question 15

foramina for accessory nerve XI

Answer 15

jugular foramen of temporal bone and occipital bones, foramen magnum of occipital bone

Question 16

foramina for hypoglossal nerve XII

Answer 16

hypoglossal canal of occipital bone

Question 17

mnemonic devise for type of innervation each cranial nerve provides (Sensory, Motor, Both)

Answer 17

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Question 18

what does olfactory nerve I innervate?

Answer 18

sensory for smell

Question 19

what does optic nerve II innervate?

Answer 19

sensory for sight

Question 20

what does oculomotor nerve III innervate?

Answer 20

motor for 4 of 6 extrinsic muscles of the eye; parasympathetic to sphincter of pupil and ciliary muscle of lens

Question 21

what does trochlear nerve IV innervate?

Answer 21

motor for SO eye muscle

Question 22

what does opthalmic nerve V1 innervate?

Answer 22

sensory to cornea, nasal mucosa, lacrimal gland, skin of anterior scalp, upper eyelid and nose

Question 23

what does maxillary nerve V2 innervate?

Answer 23

sensory to skin of face, oral cavity and upper teeth

Question 24

what does mandibular nerve V3 innervate?

Answer 24

sensory to skin of lower face, lower teeth, and general sensation to anterior 2/3 of tongue; motor to muscles of mastication

Question 25

what does abducens nerve VI innervate?

Answer 25

motor to LR muscle of eye

Question 26

what does facial nerve VII innervate?

Answer 26

motor to muscles of facial expression; sensory to anterior 2/3 of tongue for taste; parasympathetic to lacrimal, mandibular and sublingual glands

Question 27

what does vestibulocochlear nerve VIII innervate?

Answer 27

sensory for equilibrium and hearing

Question 28

what does glossopharyngeal nerve IX innervate?

Answer 28

sensory to pharynx and posterior 1/3 of tongue; motor to stylopharyngeus muscle; parasympathetic to parotid gland

Question 29

what does vagus nerve X innervate?

Answer 29

motor and sensory to pharynx and larynx, motor and sensory to structures in thoracic and abdominal cavities; parasympathetic to thoracic and abdominal viscera

Question 30

what does accessory nerve XI innervate?

Answer 30

motor to trapezius and sternocleidomastoid muscles

Question 31

what does hypoglossal nerve XII innervate?

Answer 31

motor to muscles of tongue