cranial nerves (first 6)

Question 1

where does the olfactory nerve start, pass through and end

Answer 1

starts at olfactory epithelium passes through the cribriform plate of ethmoid bone and olfactory bulb and terminates in primary olfactory cortex

Question 2

what type of fibres does the olfactory nerve have

Answer 2

sensory - smell

Question 3

what are the assessment considerations for the olfactory nerve

Answer 3

nasal fractures, nasothmoidal fractures and using smelling salts

Question 4

where does the optic nerve start, pass through and end

Answer 4

starts at the retina of the eye, passes through the optic canals, converges at optic chiasm, thalamus where they synapse and then optic radiation runs to visual cortex

Question 5

what type of fibres does the optic nerve have

Answer 5

sensory - vision

Question 6

what are the assessment considerations for the optic nerve

Answer 6

visual focus - how many fingers in front of face and in peripheal vision

Question 7

what type of impulses does the optic nerve carry

Answer 7

afferent impulses for vision

Question 8

where does the oculomotor nerve start, pass through and end

Answer 8

starts at ventral midbrain through the superior orbital fissure to the extrinsic eye muscles

Question 9

how is the oculomotor nerve controlled

Answer 9

parasympathetically

Question 10

what type of fibres does the oculomotor nerve have

Answer 10

motor

Question 11

what does the oculomotor nerve control / function

Answer 11

raises eyelid
directs eyeball
constricts iris
controls lens

Question 12

what are the assessment considerations for the oculomotor nerve

Answer 12

if the eye moves up, down and medially
if the pupils change when exposed to light

Question 13

which muscle does the oculomotor nerve control

Answer 13

cilary muscle that changes the pupil size

Question 14

where does the trochlear nerve start, pass through and end

Answer 14

starts at the dorsal midbrain and enters the orbits via the superior orbital fissures

Question 15

what type of fibres does the trochlear nerve have

Answer 15

motor - directs eyeball

Question 16

what muscle does the trochlear nerve innervate

Answer 16

superior oblique muscles

Question 17

what are the assessment considerations for the trochlear nerve

Answer 17

if the eyeball moves laterally and downward rotation

Question 18

what are the three divisions of the trigeminal nerve

Answer 18

v1 ophthalamic
v2 maxillary
v3 mandibular

Question 19

where does the trigeminal nerve start, pass through and end

Answer 19

starts at the PONS passes through the superior orbital fissure (v1) foramen rotundum (v2) foramen ovale (v3)

Question 20

what type of fibres does the trigeminal nerve have

Answer 20

sensory v1/2
motor v3

Question 21

what are the assessment considerations for the trigeminal nerve

Answer 21

check the zygomatic arch, mandible and frontal bones.
see if the jaw can move side to side, clench and open wide
blood in roof of mouth
v1 if they can frown

Question 22

where does the abducents nerve start, pass through and end

Answer 22

starts at the inferior PONS and enters the orbits via the superior orbital fissure

Question 23

what type of fibres does the abducents nerve have

Answer 23

motor

Question 24

what muscle does the abducent nerve innervate

Answer 24

lateral rectus muscle

Question 25

what does the abducent nerve do

Answer 25

abducts the eye

Question 26

what are the assessment considerations for the abducents nerve

Answer 26

if the eye abducts

Question 27

Exit foramen of olfactory nerve

Answer 27

Cribriform plate

Question 28

Exit foramen of optic nerve

Answer 28

Optic canal

Question 29

Exit foramen of oculomotor nerve

Answer 29

Superior orbital fissure

Question 30

Exit foramen of trochlear nerve

Answer 30

Superior orbital fissure

Question 31

Exit foramen of trigeminal nerve

Answer 31

Superior orbital fissure
Foramen rotundum
Foramen ovale

Question 32

Exit foramen of abducens nerve

Answer 32

Superior orbital fissure