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23 Cards in this Set
- Front
- Back
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Which are the most fragile bones of the nasal cavity?
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Sphenoid and ethmoid bone
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A blowout fracture is a fracture of which walls
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medial or inferior walls of the orbit
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Roof of the orbit is formed by the..
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anterior cranial fossa
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Where does V1 travel
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Through the superior orbital fissure
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Where does V2 travel
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inferior orbital fissure
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Which surgical approach is best when dealing with the orbit
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lateral approach
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Describe tear route
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tears start laterally and run down into the lacrimal sac to be stored
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Muscle that closes the eyelids
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obicularis occuli
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Muscle that raises the upper eyelid
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extraoculator levator
palpebrae superior |
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Where do the muscles connect on the orbit
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connects to the anterior sclera
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Orbicularis Oculi
(orbital sphincter) |
CN VII
closes eyelids and spreads lacrimal fluid DOES NOT RAISE UPPER EYELID |
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Levator palpebrae superiororis
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CN III
Raises upper eyelid |
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Bell's Palsy
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Injury to the facial nerve
Inflammation of the nerve near the stylomastoid foramen |
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Superior tarsal muscle
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smooth muscle innervated by postganglionic sympathetic fibers from SCG via internal carotid plexus
FRIGHT |
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Superior oblique action
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move the eye down and out
because of pulley |
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Inferior oblique action
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move the eye up and out
because of pulley |
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Drooping due to oculomotor palsy
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complete ptosis
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lesions of sympathetic pathway to the superior tarsal muscle
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incomeplete ptosis
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What are the parts of the lacrimal apparatus?
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Puncta
Canaliculi Lacrimal sac Nasolacrimal duct -terminates in inferior nasal meatus |
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Innervation of the superior oblique
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CN IV- Troclear
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Innervation of Lateral Recrus
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CN VI- Abducens
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Innervation of superior rectus and medial rectus
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Oculomotor
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Where does the superior oblique turn to form its pulley system
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the Trochlea
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