Flashcards in Unit VIII - Eye Deck (108)
Where are the tarsal glands located?
In each eyelid
What kind of glands are tarsal glands?
Modified sebaceous glands
What do tarsal glands secrete?
An oily substance that covers tears upon blinking
All arteries to the eyeball are branches of what artery?
How many long posterior ciliary arteries are there?
1 on each side (medial and lateral)
The long posterior ciliary arteries run between what structures?
Sclera and choroid
Which arteries of the eye enter the eyeball on the posterior surface forming a ring around the optic nerve, and how many are there?
Short ciliary arteries (6-12)
Which arteries of the eye arch either over or under the eyeball, and how many are there?
Anterior ciliary arteries (6-8 total)
What artery is the only artery that supplies the retina?
Central retinal artery
The central retinal artery travels to the retina via what structure?
How are the veins involved in the drainage of the eye named?
For the arteries they accompany
What part of the trigeminal nerve makes up the nerve supply to the eyeball?
Branches of the nasociliary nerve of the ophthalmic division of the trigeminal nerve
What nerves of the eyeball are sensory for the ciliary body, iris, and cornea?
Long ciliary nerves
What nerves are sensory for everything besides the ciliary body, iris, and cornea?
Short ciliary nerves
Postganglionic sympathetic fibers reach which eye muscles?
Ciliaris and dilator pupillae muscles
Postganglionic sympathetic fibers come from what plexus and through what ganglion to reach the ciliaris and dilator pupillae muscles?
Cavernous plexus to the ciliary ganglion
Postganglionic parasympathetic fibers reach what muscles of the eye?
Ciliaris and sphincter pupillae muscles