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Flashcards in cranial nerves Deck (50)
1

branches of 5 and their function

V1 & V2 - sensory only
V3 - sensory and motor

2

name of trigeminal (CNV) branches

V1 - ophthalmic
V2 - maxillary
V3 - mandibular

3

olfactory nerves are

special sensory

4

oculomotor nerves are

motor & parasympathetic

5

trochlear nerves are

motor

6

abducent nerves

motor

7

only have motor fibres (cranial nerves)

trochlear, abducent, spinal accessory, hypoglosal

8

only have special sensory

olfactory, optic, vestibulocochlear

9

facial nerve has

special sensory; motor & parasympathetic

10

glossopharyngeal nerves have

special sensory; sensory; motor & parasympathetic

11

vagus has

sensory, motor and parasympathetic

12

course all cranial nerves take

CNS > intracranial > extra cranial

13

trigeminal connects to CNS where

only cranial nerve to connect to pons

14

all trigeminal branches pass through which cranial bone

sphenoid bone (butterfly looking one)

15

CN V1 foramina

superior orbital fissure

16

CN V2 foramina

foreamen rotundum

17

CN V3 foramina

foreamen ovale (only one to carry motor fibres)

18

CN V1 supplies where

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

19

CN V2 supplies

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

20

CN V3 supplies

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

21

what supplies angle of mandible

great auricular nerve

22

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

CN V3 (plus CNVII (7) - facial)

23

6 muscles CN V supplies motor

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

24

facial never connects to CNS where

antolaterally at pontomedullary junction

25

facial never passes through which bone

temporal

26

pathway of facial nerve out of skull

internal acoustic meatus > stylomastoid foramen

27

which gland does the facial nerve pass through

parotid

28

facial never innervates which structures

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

29

glossopharyngeal nerve connects to CNS where

medulla

30

glossopharyngeal nerve passed through which foraminae

jugular

31

what innervates posterior 1/3rd of tongue

glossopharyngeal nerve

32

special sensory of glossopharyngeal nerve

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

33

general sensory of glossopharyngeal nerve

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

34

parasympathetic of glossopharyngeal nerve

to parotid gland

35

visceral afferent of glossopharyngeal nerve

carotid sinus baroreceptors & the carotid body chemoreceptors

36

motor of glossopharyngeal

to 1 of longitudinal muscles of pharynx

37

vagus connects to CNS where

medulla (immediately inferior to glosso CN IX)

38

vagus passes out skull via

jugular

39

spinal accessory nerve connects to CNS via

via cervical spinal nerve anterior rootlets to the spinal cord

40

accessory passes through which foramen

jugular

41

which nerves pass through jugular foramen

accessory, vagus, glosso

42

pathway of accessory nerve

jugular foramen > sternocleidomastoid > crosses posterior triangle > trapezius

43

hypoglossal connects to CNS via

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

44

hypoglossal passes out skull via

hypoglossal canal

45

hypoglossal canal is in which bone

occipital

46

extracranial pathway of hypoglossal

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

foremen ovale

CN V3

48

foramen rotundum

CN V2

49

superior orbital fissure

CN V1

50

stylomastoid foreamen

facial nerve (CN VII)