Practical 06 - Eye CNII, CNIII, CNIV, CNVI, Hearing, CNVIII Flashcards
which conjunctiva is found lining the inferior eyelid
a.palpebral
b.bulbar
a.palpebral
reflects onto eyeball at inferior conjunctival fornix, becoming bulbar conjunctiva
which conjunctiva is found lining the sclera
a.palpebral
b.bulbar
b.bulbar
which part of the lacrimal gland is most superior
a.orbital
b.palpebral
a.orbital
what is the correct order of the flow of tears out of the eye
a.lacrimal canaliculi, lacrimal duct, nasolacrimal duct
b.lacrimal duct, lacrimal caniliculi, nasolacrimal duct
c.nasolacrimal duct, lacrimal duct , lacrimal caniliculi
a.lacrimal canaliculi, lacrimal duct, nasolacrimal duct
opens into inferior nasal meatus
running nose when crying
what is the pulley system that attaches the superior oblique to the eyeball known as
a.lacrimal
b.trochlear
c.ethmoid
b.trochlear
where does levator palpebrae superioris insert
a.posterior eyeball
b.superior eyeball
c.lateral eyeball
d.medial eyeball
e.upper eyelid
f.lower eyelid
e.upper eyelid
what muscle elevates the eyelid
a. medial rectus
b.lateral rectus
c.superior rectus
d.inferiorrectus
e.superior oblique
f.levator palpebrae superioris
f.levator palpebrae superioris
what action is superior rectus responsible for
a.looking up and in
b.looking up and out
c.looking down and in
d.looking down and out
a.looking up and in
what action is inferior rectus responsible for
a.looking up and in
b.looking up and out
c.looking down and in
d.looking down and out
c.looking down and in
what action is lateral rectus responsible for
a.looking up and in
b.looking up and out
c.looking down and in
d.looking down and out
e.looking out
f.looking in
e.looking out
abducting
what action is medial rectus responsible for
a.looking up and in
b.looking up and out
c.looking down and in
d.looking down and out
e.looking out
f.looking in
f.looking in
what action is superior oblique responsible for
a.looking up and in
b.looking up and out
c.looking down and in
d.looking down and out
e.looking out
f.looking in
d.looking down and out
what action is inferior oblique responsible for
a.looking up and in
b.looking up and out
c.looking down and in
d.looking down and out
e.looking out
f.looking in
b.looking up and out
which capsule surrounds the eye
a.cavernous
b.tenons
c.sinosal
d.orbital
b.tenons
which division of the trigeminal nerve does the frontal nerve arise from
a.maxillary
b.mandibular
c.opthalmic
c.opthalmic
what structure does the frontal nerve travle through to reach the eye
a.optical channel
b.superior orbital fissure
c.inferior orbital fissure
d.foramen rotundum
b.superior orbital fissure
the supraorbital and supratrochlear nerves are branches of which division of the trigeminal nerve
a.opthalmic
b.maxillary
c.mandibular
a.opthalmic
becomes frontal nerve which then divides into supratrochlear and supraorbital
the supraorbital and supratrochlear nerves are …
a.motor
b.sensory
c.sensory motor
b.sensory
which vein runs with the frontal nerve
a.superior opthalmic vein
b.inferior opthalmic
c.supraorbital
d.supratrochlear
a.superior opthalmic vein
which of these veins drains directly to the cavernous sinus so is a potential route of infection into the cranial cavity
a.superior opthalmic vein
b.inferior opthalmic
c.supraorbital
d.supratrochlear
a.superior opthalmic vein
which of these muscles does not arise from the common tendinous ring
a. medial rectus
b.lateral rectus
c.superior rectus
d.inferior rectus
e.superior and inferior oblique
f.levator palpebrae superioris
e.superior oblique and inferior oblique
where does the superior oblique arise
a.common tendinous origin
b.sphenoid bone
c.floor of the orbit
b.sphenoid bone
where does the inferior oblique arise
a.common tendinous origin
b.sphenoid bone
c.floor of the orbit and maxilla
c.floor of the orbit and maxilla
which cranial nerve innervates lateral rectus
a.CN3
b.CN4
c.CN6
c.CN6
abducent
LR6 SO4 REM3
which cranial nerve innervates superior oblique
a.CN3
b.CN4
c.CN6
b.CN4
trochlear
LR6 SO4 REM3
which cranial nerve innervates inferior oblique
a.CN3
b.CN4
c.CN6
a.CN3
occulomotor
which cranial nerve innervates medial rectus
a.CN3
b.CN4
c.CN6
a.CN3
which cranial nerve innervates superior rectus
a.CN3
b.CN4
c.CN6
a.CN3
which cranial nerve innervates inferior rectus
a.CN3
b.CN4
c.CN6
a.CN3
the frontal nerve, lacrimal nerve, trochlear nerve, occulomotor nerve , abducent nerve and superior opthalmic vein trvale throigh which structure
a.foramen rotundum
b.foramen ovale
c.cavernous sinus
d.superior orbital fissure
e.inferior orbital fissure
d.superior orbital fissure
what does the levator palpebrae superioris attach to
a.sphenoid bone
b.tarsal plate
c.cribiform plate
d.crista galla
e.superior eyeball
b.tarsal plate
in upper eyelid
fibrous structure
provides support to eyelid
what makes up the triad of horners syndrome
ptosis- eyelid drooping
miosis - pupillary constriction
anhidrosis - abscence of sweating
only one side
where is the lesion normally found in horners
lower cervical upper thoracic spinal cord
horners syndrome pathophysiology
inhibited sympathetic supply to eye
in which type of 3rd nerve palsy is there loss of extra occular movements (in and up lost) so eye shows as down and out before loss signs (pupil constriction)
a.medical
b.surgical
a.medical
all eye muscles supplied by cn3 dont work
so lateral rectus (out) and superior oblique ( down and out) left
inside part of cn3 (motor) affected so must be ischaemic cause as blood runs from out to in
inside area loses blood supply first
in which type of third nerve palsy presents with pupillary constriction before the classic down and out eye
a.medical
b.surgical
b.surgical
parasypmatehtic fibres damaged
found on outside of cn3
common causes - haemorrhage, tumour eg berry aneurysm in circle of wills
