all of the following muscles depress the eyebrow except
- frontalis
- corrugator
- procerus
- orbicular oculi - Answer- frontalis
metastasizing cells originating from a melanoma of the lateral palpebral conj will follow the conj lymphatic vessels and arrive first in which of the following ly...
all of the following muscles depress the eyebrow e
metastasizing cells originating from a melanoma of
your pt has a recurrence of dacryocystitis what s
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Kmk - Crash Course
all of the following muscles depress the eyebrow except
- frontalis
- corrugator
- procerus
- orbicular oculi - Answer- frontalis
metastasizing cells originating from a melanoma of the lateral palpebral conj will follow the conj lymphatic vessels and arrive first in which of the following lymph nodes
- parotid, submandibular, superior deep cervical, submental - Answer- parotid
your pt has a recurrence of dacryocystitis. what structure prevents this infection from moving into and infecting the orbital contents - Answer- orbital septum septum is behind the sac
which of the following prevents backflow of tears from the nasolacrimal duct and lacrimal sac to the common canaliculi - Answer- angle the common canaliculus enters the lacrimal sac
an example of sherringtons law - Answer- when the medial rectus adduct one eye, the lateral rectus of the same eye is inhibited
which of the following is not an action of the inferior oblique
- extorsion, abduction, elevation, depression - Answer- depression
when the left eye is adducted, which muscle is primarily responsible for elevation - Answer- IO
A pt with a traumatic right cranial nerve 6 palsy is most likely to be asymptomatic in which position of gaze - Answer- left gaze
an orbital blow-out fracture may lead to a restrictive hypotropia due to entrapment of the
inferior extra-ocular muscles in which of the following sinuses - Answer- maxillary
a paranasal sinus infection is most likely to spread to the orbit through which of the following bones - Answer- ethmoid
which of the following branches of the external carotid artery provides blood supply to the extraocular muscles
- superficial temporal, maxillary, angular, facial - Answer- maxillary inflammation of the superficial temporal artery may lead to irreversible damage to the anterior optic nerve due to communication with which of the following arteries - Answer- SPCA
which of the following ocular structures is not supplied by the spca
- outer retinal layers, ciliary body, posterior choroid, optic nerve head - Answer- ciliary body
which of the following provides the majority of the blood supply to the prelaminar portion
of the optic nerve - Answer- anastomoses of the spca that form the circle of zinn-haller
which of the following veins drains blood directly from the cb - Answer- anterior ciliary vein [any anterior structure]
a carotid-cavernous sinus fistula is most likely to result in which of the following - Answer- mydriasis, limited abduction, decreased corneal sensation
an internal carotid artery aneurysm within the cavernous sinus may result in which of the following - Answer- eso deviation, neurotrophic keratopathy, excyclo deviation
what is true regarding sclera - Answer- - it is continuous with corneal stroma
- sclera has a lower water content than the cornea
- it is avascular - it is flatter than the cornea
it is not the anchoring site for the rectus muscle orgins
which artery or group of arteries supplies the vascular plexus that forms the conj capillary loops and nourishes the peripheral cornea - Answer- ACA
what is associated with folds in descemet's - Answer- haab's striae in congenital glaucoma
VEGF is released in the cornea in what layer - Answer- stroma - blood vessels
where are the goblet cells located that secrete the mucin layer of the tear film - Answer- epi of conj
what is located within the outer lymphoid layer of the conj - Answer- mast cells
limbus - Answer- - location where descemet's layer ends and becomes swabs lines
- bowman ends
- location where tenon's capsule begins
- location where conj strom begins
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