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68 Cards in this Set

  • Front
  • Back
apex of orbital cavity - faces which way?
posteriorly
orbit is what shape?
four sided pyramid which slants medially
orbital cavity - roof
-orbital plate of frontal bone
-lesser wing of sphenoid
orbital cavity - roof includes what fissure?
superior orbital fissue
orbital cavity - medial wall
-lamina papyracea of ethmoid
-lacrimal bone
orbital cavity - floor
-orbital part of maxilla
-palatine
-zygomatic (small part)
orbital cavity - lateral wall
-frontal process of zygomatic
-greater wing of spehnoid
-frontal (small part)
where do "blow out fractures" occur in the orbital cavity, and why?
floor and medial wall
-they are thin
bubar fascia - also known as?
tenon's capsule
bubar fascia - attaches to:
sclera
bubar fascia - function
-facilitates eye movements
-separates eyeball from other orbital contents
-prolonged over the tendons of the extraocular mm
conjunctiva - lines what?
inner aspect of eyelids and goes back into the eyeball
conjunctiva - it's sac opens up to the surface via:
palperbral fissure (opening between eyelids)
what part of eyes accounts for "bloodshot" eyes, and why?
conjunctiva
-because it is very vascular, and the vessels are dilated
eyelids - moveable ____ of skin that contain ____ and a dense connective tissue layer, the _____.
-folds
-glands
-tarsal plate
tarsal glands secrete what, and what does it do?
-waxy film
-slows evaporation of tears
orbicularis oculi - innervation?
CN7
levator palpabrae - innervation?
CN3
which muscles are found in the upper lid of eye? which ones are made of smooth muscle?
-orbicularis oris
-levator palpabrae superioris
-superior tarsal m (smooth m)
superior tarsal m - innervation?
ANS
which gland is associated with eyelashes
ciliary gland
what produces a "sty"?
ciliary gland inflamation
what is responsible for production of tears
lacrimal apparatus
lacrimal gland - what kind of gland?
exocrine
lacrimal gland produces:
tears
lacrimal gland recieves secretomotor input from:
pterygopalatine ganglion
pterygopalatine ganglion - recieves preganglionics from:
CN7
tears drain from lacrimal gland drain into _____ and move to _____.
conjunctival sac
-medial angle of eye
lacrimal puncta - path of tears
lacrimal canalicula --> lacrimal sac --> lacrimal puncta
lacrimal puncta - location?
one at the medial end of each eyelid
path of tears from lacrimal sac into nose:
lacrimal sac --> nasolacrimal duct --> inferior meatus of nasal cavity
four recti - origin
edges of optic canal
four recti - form a cuff around _____.
-optic n
-CN11
-CN3
superior oblique m of eye - origin
sphenoid
superior oblique m of eye - passes thru _____ and inserts on _____.
-trochlea
-sclera
inferior oblique m of eye - origin
anterior margin of the floor of orbit
inferior oblique m of the eye - insertion
sclera, under lateral rectus
CN3 - innervates what extraocular muscles?
-medial rectus
-superior rectus
-inferior rectus
-inferior oblique
CN11 - innervates what extraocular muscles?
lateral recus
CN9 - innervates what extraocular muscles?
superior oblique
medial rectus m - function
adducts (gaze)
lateral rectus m - function
abducts
superior rectus m - function
elevates abducted
inferior rectus m - function
depresses abducted
superior oblique m of the eye - function
depresses adducted
inferior oblique m of the eye - function
elevates adducted
optic n (CN2) carries visual impulses from the neural part of the:
retina
optic n is really a ____ of the brain
"tract"
these nerves innervate the extraocular mm (generally)
CN3
CN9
CN11
path of oculomotor n:
oculomotor n --> parasymathetic fibers --> ciliary ganglion --> constrictor pupillae and ciliary m.
ciclary m - funciton
change the shape of lense
-focus image
CN5I/opthamalic division - supplies PURELY sensory to what?
-conjuctiva
-cornea
-upper eyelid
-nose
-scalp
-frontal, spehnoidal, and ehtoidal air sinuses
CN5I - branches
-frontal n
-nasociliary n
-lacrimal n
largest nerve of the orbit?
facial n
frontal nerves - divisions
-supratrochlear n
-supraorbital n
dialator pupili - innervation
nasociliary n
superior tarsal m - innercation
nasociliary n
nasociliary n - damage results in?
-ptosis
-pupil constriction
lacrimal n - function?
sensory to upper eyelid
lacrimal n - s, m, b, p?
-sensory
-parasympathetic
parasympathetic fibers of lacrimal gland are ______ to the ______ gland
secretomotor
-lacrimal gland
ANS is divided into _____ and _____.
sympathetic division
parasympathetic division
sympathetic - reaction?
flight or fight
parasympathetic - reaction?
vegitative
another name for sympathetic division of ANS
thoracolumbar division
sympathetic chain of ganglia - function?
elevator system by which symptathetic influences extend above and below thoracolumbar levels
another name for parasympathetic division of ANS
craniosacral division
parasympathetic ganglia associated with cranial nn:
-ciliary (CN3)
-pterygopalatine (CN7)
-submandibular (CN7)
-otic (CN9)