DR -orbit Flashcards
what bones make up the margins of the orbit
zygoma, maxilla and frontal
if the orbit is described as a four sided pyramid, what structure forms the apex
superior orbital fissure
what bones make up the medial wall of the orbit
maxilla, lacrimal and ethmoid
what bones make up the lateral walls of the orbit
zygomatic and greater wing of sphenoid
what bones make up the roof of the orbit
frontal bone and lesser wing of sphenoid
what bones make up the floor of the orbit
maxilla and palatine
where is the lacrimal fossa (lacrimal sac)
upper lateral aspect of the orbit
created by the orbital part of the lacrimal gland
where is the lacrimal bone
medial side of orbit
what is the nasolacrimal canal
the route tears take to pass into the nasal cavity
what does the superior orbital fissure transmit
lacrimal, frontal, nasociliary, oculomotor, abducent and trochlear nerves
branch of lacrimal artery and ophthalmic veins
what does the optic canal transmit
optic nerve and ophthalmic artery
where is the inferior orbital fissure
floor of the orbit
also the infraorbital groove which then becomes the infra orbital canal
what does the infraorbital fissure transmit
infra orbital and zygomatic nerves,
infraorbital artery and vein
ophthalmic veins
veins to the pterygoid plexus
what other foramina are found in the orbit
supra-orbital notch
the infra-orbital foramen, the anterior and posterior ethmoidal foramina
the zygomaticofacial foramen.
These foramina transmit neurovascular bundles named after the foramen or notch through which they pass
