Cranial Nerves 1-6 Flashcards by patrick ellis

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which CNs come from midbrain? [4]

which CNs come from pons? [4]

which CNs come from medulla oblongata? [4]

which CNs come from midbrain? [4]
olfactory, optic, oculomotor, trochlea

which CNs come from pons? [4]
trigeminal, abducent, facial, vestibulochoclear

which CNs come from medulla oblongata? [4]
glossopharnygeal, vagus, accessory, hypoglossol

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which of these CN does not come from the midbrain?

olfactory,
trochlea
optic
oculomotor
abducent

which of these CN does not come from the midbrain?

olfactory,
trochlea
optic
oculomotor
abducent (from pons)

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which of these CN does not come from the medulla oblongata?

glossopharyngeal
accessory
hypoglossal
trochlear
vagus

which of these CN does not come from the medulla oblongata?

glossopharyngeal
accessory
hypoglossal
trochlear
vagus

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which of these CN does not come from the pons?

trigeminal
vestibulochoclear
oculomotor
abducent
facial

which of these CN does not come from the pons?

trigeminal
vestibulochoclear
oculomotor
abducent
facial

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olfactory nerve has special sensory fibres that pass through where? [1]

travelling to the brain, the olfactory passes through ^ to enter where?

olfactory nerve has special sensory fibres that pass through where? [1]
cribiform plate

travelling to the brain, the olfactory passes through ^ to enter olfactory bulb. then runs along olfactory tract to the brain

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optic nerve:

what type of nerve (sensory / motor)?

describe optic pathway xx

optic chiasm:

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what is name for left and right part of visual field

do optic nerve!!!

your left part of visual field is seen by which side of retina: right -> called
you right part of visual field is seen by which side of retina?

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oculumotor (III), trochlear (IV) and abducens (IV) all innervate the WHAT? [1]

oculumotor (III), trochlear (IV) and abducens (IV) pass through which fissure to enter the orbit? [1]

oculumotor (III), trochlear (IV) and abducens (IV) all innervate the WHAT? [1]
extraocular muscles (muscles that move your eye)

oculumotor (III), trochlear (IV) and abducens (IV) pass through which fissure to enter the orbit? [1]
superior orbital fissure

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which of the following CN are involved with extraocular muscles movement?

oculumotor (III), trigeminal (V), abducens (IV)
oculumotor (III), trochlear (IV), abducens (IV)
oculumotor (III), trigeminal (V), abducens (IV)
oculumotor (III), abducens (IV), optic (II)
optic (II), trigeminal (V), abducens (IV)

all innervate the WHAT? [1]

which of the following CN are involved with extraocular muscle movement?

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what do 5/6 of the extraocular muscles attach to what, posteriorly of the eye socket / orbit? [1]

what do 5/6 of the extraocular muscles attach to what, anteriorly of the eye socket / orbit? [1]

how do the extraocular muscles attach to the eye in relation to the eyes position? [1]

what do 5/6 of the extraocular muscles attach to what, posteriorly of the eye socket / orbit? [1]
common tendionous ring

what do 5/6 of the extraocular muscles attach to what, anteriorly of the eye socket / orbit? [1]
eyeball

how do the extraocular muscles attach to the eye in relation to the eyes position? [1]
eye lies straight on (axis of gaze), but the extraocular muscles attach at an angle (axis of orbit)

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describe difference of direction of axis of orbit and axis of gaze? [2]

*due to extraocular muscle attachment: axis of orbi is at an angle [1]**
*axis of gaze is straight on [1]**

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eye ball movements: what movemetns cause the following?

rotation around vertical axis [2]?

rotation around transverse axis? [2]

rotation around anterioposterior axis? [2]

eye ball movements: what movemetns cause the following?

rotation around vertical axis [2]?
abduction / adduction

rotation around transverse axis? [2]
elevation / depression

rotation around anterioposterior axis? [2]
intorsion / extorsion

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which extra ocular muscles attach to the common tendionous ring in the orbit? [4]

what are the names of the oblique extra ocular muscles?

which extra ocular muscles attach to the common tendionous ring in the orbit? [4]
superior rectus
inferior rectus
medial rectus
lateral rectus
= rectus muscles

what are the names of the oblique extra ocular muscles?
superior oblique
inferior olbique

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where on the

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rectus muscles

which of the following is attaches the eyeball posterior to the eyeball equator?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

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which of the following is attaches the eyeball posterior to the eyeball equator?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

which of the following is attaches to the eyeball anterior to the eyeball equator?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

what movements does this cause when contract? [2]

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which of the following is attaches to the eyeball anterior to the eyeball equator?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

what movement does this cause when contract? [1]
elevation and intorsion

give the movements of each of the extraocular muscles (if they moved in isolation) ;)

superior rectus
inferior rectus
medial rectus
lateral rectus

superior oblique
inferior oblique

superior / inferior obliques & superior / inferior rectus work together? [2]

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give the movements of each of the extraocular muscles (if they moved in isolation);)

superior rectus: elevate and intort
inferior rectus: depress and extort
medial rectus: adduct
lateral rectus: abduct

superior oblique: depress and intort
inferior oblique: elevate and extort

superior / inferior obliques & superior / inferior rectus work together? [2]
cancel each other other: e.g. superior rectus (elevate and intort) cancels out the extort of inferior oblique = just elevation

which of the following cause eye abduction?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

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which of the following cause eye abduction?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

which of the following cause eye adduction?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

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which of the following cause eye adduction?

superior rectus
inferior olbique
medial rectus
lateral rectus
superior oblique

which of the following causes depression and extortion of eye?

superior rectus
inferior rectus
medial rectus
lateral rectus

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which of the following causes depression and extortion of eye?

superior rectus
inferior rectus
medial rectus
lateral rectus

which other muscle causes the same movement? [1]
superior oblique

how do you clinically test the superior and inferior rectus? [1]

how do you clinically test the superior and inferior olbique? [1]

how do you clinically test the medial / lateral rectus? [1]

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how do you clinically test the superior and inferior rectus? [1]
abduct the eye
(do this to isolate the muscle so that the eye is aligned with the angle of the muscle pull)

how do you clinically test the superior and inferior olbique? [1]
adduct the eye

how do you clinically test the medial / lateral rectus? [1]
abduct / adduct the eye

A
B
C

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A: superior rectus
B:
C:

which of the extraocular muscles are innervated by the oculomotor nerve? [4] which other muscle is innervated by the oculomotor nerve? [1] function? [1]

which of the extraocular muscles are innervated by the oculomotor nerve? [4] **S rectus I rectus M rectus I oblique** which other muscle is innervated by the oculomotor nerve? [1] function? [1] **levator papabrae superioris - eyelid elevation**

damage to which cranial nerve causes this? optic nerve oculuomotor nerve vagus nerve facial nerve trigeminal nerve

damage to which cranial nerve causes this? optic nerve **oculuomotor nerve** vagus nerve facial nerve trigeminal nerve

oculuomotor nerve has parasympatheric innervation on which muscles? [1] what do they cause? [1] which muscle causes dilation of eye - what type of innervation is this? [2]

oculuomotor nerve has parasympatheric innervation on which muscle [2] what does this cause? [1] **constrictor pupillae - constricts pupil cillary body -** when contracts, it makes it smaller & makes _lens fatter (near vision)_ - when relaxes, ciliary body becomes bigger & makes lens smaller (far vision) which muscle causes dilation of eye - what type of innervation is this? [2] **dilator pupillae - sympathetic innervation**

which CN regulates accomodation of lens? optic nerve oculomotor nerve vagus nerve facial nerve trigeminal nerve

which CN regulates accomodation of lens? optic nerve **oculomotor nerve** vagus nerve facial nerve trigeminal nerve

which of the following extraocular muscles is not innervated by the oculomotor nerve? superior rectus superior oblique inferior oblique medial rectus which is the other nerve that isnt? [1]

which of the following extraocular muscles is not innervated by the oculomotor nerve? superior rectus **superior oblique** inferior oblique lateral rectus medial rectus which is the other nerve that isnt? [1] **lateral rectus**

what does it look like if you have oculomotor nerve damage, regarding eye movement - why? [2]

_what does it look like if you have oculomotor nerve damage, regarding eye movement - why? [2]_ lateral rectus and superior oblique arent innervated by the oculomotor nerve, so they still work get **depresion and abduction**

which nerve carries motor innervation to the superior oblique? [1]

which nerve carries motor innervation to the superior oblique? [1] **trochlear nerve (CN IV)**

how do you test to see if trochlea nerve is damaged / trochlea nerve palsy? [1]

_how do you test to see if trochlea nerve is damaged / trochlea nerve palsy? [1]_ **when** **abduct and depress eye (**superior oblique is damaged)

which following muscles is innervated the the abducent CN? superior rectus inferior rectus medial rectus lateral rectus inferior oblique

which following muscles is innervated the the abducent CN? superior rectus inferior rectus medial rectus **lateral rectus** inferior oblique

which following muscles is innervated the the abducent CN? superior rectus inferior rectus medial rectus lateral rectus inferior oblique

which following muscles is innervated the the abducent CN? superior rectus inferior rectus medial rectus **lateral rectus** inferior oblique

which foramena does the opthalmic nerve (V1) leave through? which foramena does the maxillary (V2) leave through? which foramena does the mandibular (V3) leave through?

which foramena does the opthalmic nerve (V1) leave through? **superior orbital fissues** which foramena does the maxillary (V2) leave through? **foramen rotundum** which foramena does the mandibular (V3) leave through? **foramen ovale**

which CN carriers motor innervation to the muscles of mastication? trigeminal nerve facial nerve vagus nerve hypoglossal nerve glossopharyngeal nerve

which CN carriers motor innervation to the muscles of mastication? **trigeminal nerve** facial nerve vagus nerve hypoglossal nerve glossopharyngeal nerve

which CN carriers sensory innervation to the face? trigeminal nerve facial nerve vagus nerve hypoglossal nerve glossopharyngeal nerve

which CN carriers sensory innervation to the face? **trigeminal nerve** facial nerve vagus nerve hypoglossal nerve glossopharyngeal nerve

what is the cavernous sinus? [1] which structures do you find in it? [

what is the cavernous sinus? [1] **venous space** which structures do you find in it? [5] **internal carotid artery** **CN III (oculomotor) CN IV V1 V2 VI (abducent)**

Cranial Nerves 1-6 Flashcards

(38 cards)