cranial nerves

Question 1

branches of 5 and their function

Answer 1

V1 & V2 - sensory only

V3 - sensory and motor

Question 2

name of trigeminal (CNV) branches

Answer 2

V1 - ophthalmic
V2 - maxillary
V3 - mandibular

Question 3

olfactory nerves are

Answer 3

special sensory

Question 4

oculomotor nerves are

Answer 4

motor & parasympathetic

Question 5

trochlear nerves are

Answer 5

motor

Question 6

abducent nerves

Answer 6

motor

Question 7

only have motor fibres (cranial nerves)

Answer 7

trochlear, abducent, spinal accessory, hypoglosal

Question 8

only have special sensory

Answer 8

olfactory, optic, vestibulocochlear

Question 9

facial nerve has

Answer 9

special sensory; motor & parasympathetic

Question 10

glossopharyngeal nerves have

Answer 10

special sensory; sensory; motor & parasympathetic

Question 11

vagus has

Answer 11

sensory, motor and parasympathetic

Question 12

course all cranial nerves take

Answer 12

CNS > intracranial > extra cranial

Question 13

trigeminal connects to CNS where

Answer 13

only cranial nerve to connect to pons

Question 14

all trigeminal branches pass through which cranial bone

Answer 14

sphenoid bone (butterfly looking one)

Question 15

CN V1 foramina

Answer 15

superior orbital fissure

Question 16

CN V2 foramina

Answer 16

foreamen rotundum

Question 17

CN V3 foramina

Answer 17

foreamen ovale (only one to carry motor fibres)

Question 18

CN V1 supplies where

Answer 18

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

Question 19

CN V2 supplies

Answer 19

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

Question 20

CN V3 supplies

Answer 20

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

Question 21

what supplies angle of mandible

Answer 21

great auricular nerve

Question 22

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

Answer 22

CN V3 (plus CNVII (7) - facial)

Question 23

6 muscles CN V supplies motor

Answer 23

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

Question 24

facial never connects to CNS where

Answer 24

antolaterally at pontomedullary junction

Question 25

facial never passes through which bone

Answer 25

temporal

Question 26

pathway of facial nerve out of skull

Answer 26

internal acoustic meatus > stylomastoid foramen

Question 27

which gland does the facial nerve pass through

Answer 27

parotid

Question 28

facial never innervates which structures

Answer 28

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

Question 29

glossopharyngeal nerve connects to CNS where

Answer 29

medulla

Question 30

glossopharyngeal nerve passed through which foraminae

Answer 30

jugular

Question 31

what innervates posterior 1/3rd of tongue

Answer 31

glossopharyngeal nerve

Question 32

special sensory of glossopharyngeal nerve

Answer 32

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

Question 33

general sensory of glossopharyngeal nerve

Answer 33

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

Question 34

parasympathetic of glossopharyngeal nerve

Answer 34

to parotid gland

Question 35

visceral afferent of glossopharyngeal nerve

Answer 35

carotid sinus baroreceptors & the carotid body chemoreceptors

Question 36

motor of glossopharyngeal

Answer 36

to 1 of longitudinal muscles of pharynx

Question 37

vagus connects to CNS where

Answer 37

medulla (immediately inferior to glosso CN IX)

Question 38

vagus passes out skull via

Answer 38

jugular

Question 39

spinal accessory nerve connects to CNS via

Answer 39

via cervical spinal nerve anterior rootlets to the spinal cord

Question 40

accessory passes through which foramen

Answer 40

jugular

Question 41

which nerves pass through jugular foramen

Answer 41

accessory, vagus, glosso

Question 42

pathway of accessory nerve

Answer 42

jugular foramen > sternocleidomastoid > crosses posterior triangle > trapezius

Question 43

hypoglossal connects to CNS via

Answer 43

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

Question 44

hypoglossal passes out skull via

Answer 44

hypoglossal canal

Question 45

hypoglossal canal is in which bone

Answer 45

occipital

Question 46

extracranial pathway of hypoglossal

Answer 46

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

Question 47

foremen ovale

Answer 47

CN V3

Question 48

foramen rotundum

Answer 48

CN V2

Question 49

superior orbital fissure

Answer 49

CN V1

Question 50

stylomastoid foreamen

Answer 50

facial nerve (CN VII)