ORBIT TESTED QUESTIONS WITH REVISED ANSWERS ALL UPDATED
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Course
ORBIT
Institution
ORBIT
ORBIT TESTED QUESTIONS WITH REVISED ANSWERS ALL UPDATED
Where are tears produced? - Answer-lacrimal gland
Where do tears travel to first? - Answer-Puncta
What does the tear do after entering puncta - Answer-Pass through the vertical portion of the canaliculus and then to the horizontal
W...
ORBIT TESTED QUESTIONS WITH
REVISED ANSWERS ALL
UPDATED
Where are tears produced? - Answer-lacrimal gland
Where do tears travel to first? - Answer-Puncta
What does the tear do after entering puncta - Answer-Pass through the vertical portion
of the canaliculus and then to the horizontal
What happens to the tear after passing through common canaliculus? - Answer-
Lacrimal sac
What happens when the nasolacrimal duct is not working properly? - Answer-Epiphora
tear overflow
Where does the blood supply to the eyeball come from? - Answer-Ophthalmic Artery
How can the ophthalmic artery by divided into generally? - Answer-Muscular group,
ocular group, and extraorbital artery
How does the optic nerve travel? - Answer-Initially inferior to optic nerve and then loops
around the optic nerve before branching out
What are the arteries of the ocular group? - Answer-Short and long posterior ciliary
artery, anterior ciliary artery, and the central retinal artery
Where does the anterior ciliary artery come from? - Answer-Lacrimal Artery
What branches off the ophthalmic artery? - Answer-Posterior and anterior ethmoid
artery, dorsal nasal artery, supratrochlear artery, supra-orbital artery, and lacrimal artery
What artery branches off the lacrimal artery? - Answer-Zygomaticofacial/temporal artery
True or False: There are preorbital anastomosis - Answer-True
Where does the superior ophthalmic vein drain into? - Answer-Cavernous Sinus
What are the major veins of the eye? - Answer-Superior and inferior ophthalmic vein
, What does the facial vein drain into and where is it? - Answer-Facial into angular and it
is around the nose
Where does the optic nerve exit the orbit? - Answer-Within the common tendinous ring
What encases the optic nerve? - Answer-Dura matter, Arachnoid, and Pia matter
Where does the superior and inferior division of the oculomotor nerve leave the orbital
fissure? - Answer-Superior orbital fissure within the common tendinous ring
What is the parasympathetic innervation of the eye muscles done by? Where? -
Answer-Ciliary ganglion; ciliary muscle and constrictor pupillae of the iris
What controls the ciliary muscle and the constrictor muscle? What does it do? - Answer-
Parasympathetic muscle, constricts the pupillae of the iris
What does the sympathetic nervous system do to the eye? - Answer-Contracts the
dilator muscle
Where does the trochlear nerve exit the brain? - Answer-The dorsal aspect of the brain
Where does the Trochlear nerve leave the orbital fissure? - Answer-The superior orbital
fissure and outside the common tendinous ring
What is the superior wall to the orbit? - Answer-Anterior cranial fossa
Where is the apex of the orbit? - Answer-back of the optic canal
Describe the location of the medial wall and lateral wall of the orbit - Answer-Medial
walls are parallel to each other and form a 45 degree angle with the lateral wall
What makes up the lateral walls of the orbit? - Answer-Temporal and middle cranial
fossa
What makes up the medial walls of the orbit? - Answer-Nasal Cavity and the ethmoid
sinuses
What makes up the inferior wall of the orbit? - Answer-Maxillary sinus
What is most likely to fracture first in regard to bones of the orbit? - Answer-Orbital floor
What is the angle between the visual axis and orbital axis? - Answer-23 degrees
How far apart are the lateral walls to each other? - Answer-90 degrees
What angle does the orbital axis form? - Answer-45 degrees
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