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ORBITS

QuestionAnswer
the circular base of each orbit is composed of Frontal bone, maxilla, and zygoma
each orbit is what shaped cone, bony walled structure
____forms the floor maxilla
what makes up the posterior orbit sphenoid and ethmoid
____ bone contributes to the innermost posterior portion of the floor of each orbit palatine
what are the 3 cranial bones frontal, ethmoid, sphenoid
what are the 4 facial bones maxilla, zygoma, lacrimal, palatine
is a small hole in the sphenoid bone that is located posteriorly at the apex of the cone-shaped orbits optic foramen
is a cleft or opening between the greater and lesser wings of the sphenoid bone, lateral to the optic foramen superior orbital fissure
controls movement of the eye and eyelid superior orbital fissure
located between the maxilla, zygomatic bone, and greater wing of the sphenoid inferior orbital fissure
allows for transmission of the maxillary branch of the CN, permit entry of sensory innervation for the cheek, nose, upper lip and teeth inferior orbital fissure
small root of bone that separates the superior orbital fissure for the optic canal sphenoid strut
a portion of the medial wall of the orbit is formed by the thin ___ bone lacrimal
the rim of the orbit, which corresponds to the outer circular portion of the cone is called base
the posterior portion of the cone apex
what does the optic nerve pass through optic foramen
the orbitomeatal line adjusted parallel to the floor, each orbit would project superiorly at an angle 30 degrees
the orbitomeatal line adjusted parallel to the floor each orbit would project toward the MSP at an angle 37 degrees
how many bones make up the orbit 7
_____ of the frontal bone forms most of the roof of the orbit orbital plate
____ forms much of the lateral wall and some of the floor of the orbit zygoma
Created by: alexiamiller
 

 



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