cranial nerves 2 :)

Question 1

trigeminal nerve divisions

Answer 1

ophthalmic
maxillary
mandibular
all sensory, V3 motor

Question 2

what is the largest cranial nerve

Answer 2

trigeminal

Question 3

where are the cell bodies of the sensory trigeminal nerve

Answer 3

trigeminal ganglion

Question 4

where does the trigemnial nerve arise from

Answer 4

lateral border of pons

Question 5

what does opthalmic branch of trigeminal supply

Answer 5

eye and upper part of nasal cavity

Question 6

what are the 3 divisions of opthalmic branch of CN V

Answer 6

frontal
- skin of forehead
lacrimal
- lateral skin of upper eyelid
nasociliary
- medial upper eyelid
- upper part of nasal cavity

Question 7

where does V1 pass through

Answer 7

superior orbital fissure

Question 8

where does the maxillary branch pass

Answer 8

bony canal

in floor of the orbit and root of maxilary air sinus

Question 9

what does the maxillary branch provide

Answer 9

sensory innervation 
skin from lower eyelid to upper lip
maxillary yeeth
palate (hard and soft)
nasal cavity

Question 10

where does V2 enter to supply sensation to lower eyelid and upper lip

Answer 10

infraorbital notch/foramen

Question 11

what is at the cribriform plate and where is it

Answer 11

olfactory bulbs

ethenoid bone

Question 12

what does V2 pass through in skull

Answer 12

foramen retundum

Question 13

what branch is given off by v2 before entering the bony canal

Answer 13

posterior superior alveolar nerve

Question 14

branches v2 from the bony canal

Answer 14

anterior superior alveolar nerver

Question 15

what does mandibular supply sensory

Answer 15

skin of lower lip and chin
lower dentiton
anterior 2/3 tongue
floor of mouth

Question 16

what does mandibular supply motor

Answer 16

muscle of mastication
ie
Masseter
Medial and lateral pterygoids
Temporalis

Question 17

where does the mandibular branch exit

Answer 17

foramen ovale

Question 18

how does V3 enter the mandible bone

Answer 18

mandibular foramen

Question 19

branch of mandibular bone

Answer 19

inferior alveolar nerve

Question 20

where does anathetic need to be inserted into for IAN

Answer 20

before nerve enters the bone

Question 21

where does the inferior alveolar nerve leave and emerge as

Answer 21

mental nerve

metnal foramen

Question 22

what are branches of v3

Answer 22

IAN

lingual nerve

Question 23

why is the lingual nerve susceptible to damage

Answer 23

superficial nerve underneath mucosa

Question 24

clinical test for function of trigeminal nerve

Answer 24

sensory -sharp blunt test all divisons
motor - clench teeth palate temporals and masseter muscles
protrube jaw (deviate to injured side if nerve damage)

Question 25

what does facial nerve suppl

Answer 25

motoro - muscles of facial expression | special tast sensation to anterior tongue via chord tympani branch

Question 26

what carries general sensation to anterior of tongue

Answer 26

lingual nerve

Question 27

where does the facial nerve exit the cranium

Answer 27

internal acoustic meatus | branches supplying musclses of mastication exit via the stylomastoid foramen

Question 28

what happens after facial nerve exits cranium

Answer 28

branches supply muscles of mastication@ stylomastoid foramen

Question 29

where does the Chorda tympani emerge

Answer 29

branch of facial when in bony canal comes through the stylomastoid formamen exits via the pertrotympanic fissure and fuses with lingual

Question 30

what does chorda tympani fuse with

Answer 30

lingual

Question 31

what innervates sublingual/mandibular glands

Answer 31

postganglionic fibres

Question 32

what innervates orbiculares oculi

Answer 32

zygomatic

Question 33

what supplies the ring of muscle surrounding the mouth (orbiculares oris)

Answer 33

mandibular

Question 34

what does the cervical supply

Answer 34

neck | platysma to tense the skin of the neck

Question 35

damage to facial nerve on face

Answer 35

individual muscle groups lost dependant on branches damaged

Question 36

damage after middle ear to facial nerve

Answer 36

tast and lacrimation intact (branched in bony canal) | facial expression lost on that side)

Question 37

damage between brainstem and middle ear of facial nerve

Answer 37

all branches and function lost

Question 38

what does botox do

Answer 38

blocks neurotransmission in facial nerve to prevent muscles of facial expression creasing the skin

Question 39

cranial nerevs

Answer 39

``` olfactory optic occulamotor trochlear trigeminal abduences facial vestbulocochlear glossopharyngeal vagus accessory hypoglossal ```

Question 40

clinical testing of facial nerve

Answer 40

jamie