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Neuro > cranial nerves > Flashcards

cranial nerves Flashcards

1
Q

branches of 5 and their function

A

V1 & V2 - sensory only

V3 - sensory and motor

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2
Q

name of trigeminal (CNV) branches

A

V1 - ophthalmic
V2 - maxillary
V3 - mandibular

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3
Q

olfactory nerves are

A

special sensory

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4
Q

oculomotor nerves are

A

motor & parasympathetic

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5
Q

trochlear nerves are

A

motor

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6
Q

abducent nerves

A

motor

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7
Q

only have motor fibres (cranial nerves)

A

trochlear, abducent, spinal accessory, hypoglosal

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8
Q

only have special sensory

A

olfactory, optic, vestibulocochlear

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9
Q

facial nerve has

A

special sensory; motor & parasympathetic

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10
Q

glossopharyngeal nerves have

A

special sensory; sensory; motor & parasympathetic

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11
Q

vagus has

A

sensory, motor and parasympathetic

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12
Q

course all cranial nerves take

A

CNS > intracranial > extra cranial

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13
Q

trigeminal connects to CNS where

A

only cranial nerve to connect to pons

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14
Q

all trigeminal branches pass through which cranial bone

A

sphenoid bone (butterfly looking one)

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15
Q

CN V1 foramina

A

superior orbital fissure

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16
Q

CN V2 foramina

A

foreamen rotundum

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17
Q

CN V3 foramina

A

foreamen ovale (only one to carry motor fibres)

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18
Q

CN V1 supplies where

A

cornea, conjunctiva, upper eyelid, skin of bridge of nose

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19
Q

CN V2 supplies

A

skin of (coz only sensory): lower eye lid, sides of nose (ala), maxima, upper lip skin/mucosa

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20
Q

CN V3 supplies

A

skin over the mandible and temporomandibular joint (apart from the angle of the mandible – supplied by C2,3 spinal nerves)

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21
Q

what supplies angle of mandible

A

great auricular nerve

22
Q

what supplies sensory to the anterior 2/3rd of tongue

A

CN V3 (plus CNVII (7) - facial)

23
Q

6 muscles CN V supplies motor

A 
masseter
temporalis
medial pterygoid
laterail pterigoid
tensor veli palatini (palate)
tensor tampani (ear)
24
Q

facial never connects to CNS where

A

antolaterally at pontomedullary junction

25
Q

facial never passes through which bone

A

temporal

26
Q

pathway of facial nerve out of skull

A

internal acoustic meatus > stylomastoid foramen

27
Q

which gland does the facial nerve pass through

A

parotid

28
Q

facial never innervates which structures

A

sublingual and submandibular glands, muscles of facial expression, anterior 2/3 taste buds

29
Q

glossopharyngeal nerve connects to CNS where

A

medulla

30
Q

glossopharyngeal nerve passed through which foraminae

A

jugular

31
Q

what innervates posterior 1/3rd of tongue

A

glossopharyngeal nerve

32
Q

special sensory of glossopharyngeal nerve

A

sensory to vallate papillae (posterior 1/3 of tongue)

33
Q

general sensory of glossopharyngeal nerve

A 
posterior 1/3 of tongue
nasopharynx
oropharynx
palatine tonsils
eustachian tube 
middle ear cavity
34
Q

parasympathetic of glossopharyngeal nerve

A

to parotid gland

35
Q

visceral afferent of glossopharyngeal nerve

A

carotid sinus baroreceptors & the carotid body chemoreceptors

36
Q

motor of glossopharyngeal

A

to 1 of longitudinal muscles of pharynx

37
Q

vagus connects to CNS where

A

medulla (immediately inferior to glosso CN IX)

38
Q

vagus passes out skull via

A

jugular

39
Q

spinal accessory nerve connects to CNS via

A

via cervical spinal nerve anterior rootlets to the spinal cord

40
Q

accessory passes through which foramen

A

jugular

41
Q

which nerves pass through jugular foramen

A

accessory, vagus, glosso

42
Q

pathway of accessory nerve

A

jugular foramen > sternocleidomastoid > crosses posterior triangle > trapezius

43
Q

hypoglossal connects to CNS via

A

many rootlets that attach lateral to the pyramids of the medulla oblongata

44
Q

hypoglossal passes out skull via

A

hypoglossal canal

45
Q

hypoglossal canal is in which bone

A

occipital

46
Q

extracranial pathway of hypoglossal

A

descends in neck lateral to carotid sheath at level of hyoid bone it passes anteriorly towards the lateral aspect of the tongue - supplies most of the muscles of the tongue

47
Q

foremen ovale

A

CN V3

48
Q

foramen rotundum

A

CN V2

49
Q

superior orbital fissure

A

CN V1

50
Q

stylomastoid foreamen

A

facial nerve (CN VII)

Neuro (20 decks)

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