eye Flashcards
margins of orbit
frontal, zygomatic, maxilla
roof of orbit
orbital plate of frontal bone, lesser wing of sphenoid
medial wall of orbit
frontal, body of sphenoid,lamina papyracea of ethmoid, lacrimal maxillla
floor of orbit
orbital process of palatine, orbital surface of maxilla nad zygomatic
lateral wall of orbit
frontal process of xygomatic and greater wing of sphenoid
the lacrimal fossa/groove acoomadates for what
lacrimal sac which gets filled with tears COLLECTS TEARS
what duct allows u to get runny nose when cry
nasolacrimal duct
the supraorbital van run through wat
supraorbital notch/foramen
the lacrimal fossa is between what
anterior and posterior lacrimal crests at medial wall anteriorly
what houses the nasolacrimal duct
nasolacrimal canal
the inferior orbital fissure has what going through it
maxillary nerve nad inferior opthlamic vein
what does th inf orb fissure communicate wiwth
pterygopalatine fossa
what does the superior orbital fissure communicate wiht
middle cranial fossa
what goes through the superior orbital fisure
oculomotor, trochlear lacrimal, frontal, nasociliary, abducent nerves and superior ophthalmic vein
NFL, nasociliary, frontal, lacrimal nerves are branches of
ophthalmic nerve V3
where is the supraorbital notch
at superior orbital margin
where is infraorbital groove
floor or orbit
where is the inferior orb fissure
between maxilla and greater wing of sphenoid
superior orb fissure b/w what
greater and lesser wings of sphenoid
optic canal is in what
lesser wing of sphenoid
what goes through optic canal
optic nerve nad ophthalmic a
what does optic canal communicate with
middle cranial fossa
zygomaticotempral and zygomatricofacial foramina is in what wall
lateral wall of orbit
what does the zygomaticotemp and zygomaticofaci foramina house
those two naems nerves
what wall is the anterior and posterior ethmoidal foramina
medial wall
what do the ant and post ethm foram hold
ant and post ethm nerves
the apex of eye visions points
medially like 45 degrees?
what separates the upper and lower eyelids
palpebral fissure (small crack in eyelid)
where do the up and low eyelids meet in corners
medial and lateral canthus
the eyelids are covered externally by () and lined internally by mucous membrane called ()
skin
conjuctiva
how many rows of eyelashes
2-3
sebaceous glands of eyelashes called
glands of zeis
sweat glands of eyelids called
ciliary glands (of Moll)
tarsal (meibomian) glands are what kind of glands
modified sebaceous glands
what is function of tarsal (meibomian) glands
oily secretion into margin of eyelids to make them air tight (prevents tears and cornea from drying out)
inflammation of what glands causes a stye or external hordeolum
glands of moll or glands of zeis
inflammation of tarsal glands is called
chalazion or internal hordeolum
what glands secretion if too much causes eyelids to stick together
tarsal gland
the medial angle of eye is separated from eyeball by space
lacrimal lake aka lacus lacrimalis
what is the small elevation in lacrimal lake called
lacrimal caruncle
what is the plica semilunaris
curved fold of conjunctiva (lat border of lake)
what forms the lateral boundary of the lacrimal lake
plica semilunaris
the plica semilunaris is a evolutionary remnant of what
nictitating membrane (crocodile eye thing)
medial end of each eyelid there is a small elevation called
lacrimal papilla
small opening in lacrimal papilla called
lacrimal punctum
the lacrimal punctum leads to the sup and inferior
lacrimal canal
the tears travel over () and go into the () and then drain into the ()
over cornea to lacrimal lake and drain into lacrimal punctum
the eyelid from outward to inward layers is
skin, superficial fascia with orbicularis oculi tendon insertion of levator palpebrae tarsal plate palpebral conjunctiva
