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54 Cards in this Set

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What two components make up the ophthalmic artery?
Middle cranial fossa & optic canal pathway
Where does the middle cranial fossa and optic canal pathway originate?
Internal carotid (medial to anterior clinoid, after carotid has exited cavernous sinus roof)
P11
The ophthalmic artery travels with _______ inside _________ suspended in _____ of ______.
optic nerve, optic canal, dura, optic nerve.
Where does the ophthalmic artery enter the orbit?
lateral and inferior part of optic canal.
Where does the orbital pathway branches of the ophthalmic artery begin?
When the ophthalmic artery leaves the optic canal.
Which two muscles does the ophthalmic artery travel between?
Medial rectus and superior oblique muscles.
What are the 10 major orbital branches?
Central retinal, lacrimal, muscular, posterior ciliary artery, supraorbital artery, posterior ethmoidal artery, anterior ethmoidal artery, medial palpebral, supratrochlear, and dorsal nasal artery.
Name the 5 branches of the lacrimal branch.
Recurrent meningeal, (anastomoses with middle meningeal), muscular, zygomatic, glandular, and lateral palpebral.
Where does the muscular branch of the lacrimal branch go?
adjacemt lateral rectus.
Where does the zygomatic branches of the lacrimal branch exit?
Orbit in zygomatic foramen
What does the glandular branches of the lacrimal branch supply?
main lacrimal gland.
Where does the lateral palpebral of the lacrimal branch exit and what branches does it divide into? What does it supply?
Exits orbit to divide into superior and inferior branches to supply lids.
Muscular branches of opthalmic go to any ______________ close by.
Rectus muscle
Where do posterior ciliary arteris oiginate? Where do they end?
Orbit; eye.
How many long posterior ciliary arteris travel to the ciliary body? How any shorts travel to the choroid?
Two longs, 10-20 shorts.
Where does the supraorbital artery exit?
Exits the orbit at supraorbital notch.
What are the two branches of the supraorbital artery?
Muscular and scalp
Where doe the muscular branches go to?
Adjacent muscles near orbital rood.
Where do the scalp branches go?
Up the forehead.
Does the Posterior ethmoidal artery supply in the orbit? Where does it exit?
No, there is no supply in orbit and it exits into ethmoid.
The Anterior ethmoidal artery is _____ than posterior thmoidal artery? (larger/smaller)
Larger
Where does the medial palpebral exit? What does it supply?
Exits orbit to supply lids with superior and inferior branches.
What is another name for the supratrochlear artery?
Frontal artery.
What does the supratrochlear artery supply?
Scalp branches.
What does the central retinal artery penetrate of the optic nerve?
Dura
When the opthalmic artery exits the canal and enters the apex of the orbit, what does the dura do?
Splits to become periosteum or orbit and dura of intraorbital optic nerve.
Where does the central retinal artery penetrate the dura of the optic nerve?
Midway between the eyeball and optic foramen.
The central retinal artery has a pathway in subarachnoid space. What allows it to resist CSF pressure?
It's thick wall resists any increased CSF pressure.
Where does the central retinal artery bend to run to the disc?
At the center of the nerve.
What are the two branches of the central retinal in optic nerve?
Pial plexus and pial septal
Where does the Pial plexus travel?
Uit comes off of the posterior ciliary plexus.
Where does the pial septal branch travel?
Into the optic nerve.
What does the central retinal in the optic nerve penetrate?
Lamina cribrosa
Where does the central retinal artery terminate?
In the disc, as superior and inferior retinal arteries.
What tissue coers the central retinal artery and vein while in the center of the optic nerve?
Pial central connective tissue.
The central retinal artery splits into two retinal arteries. Name them.
Superior retinal artery and inferior retinal artery.
What are the branches of the superior retinal artery?
Superior temporal branch and superior nasal branch.
What are the branches of the inferior retinal artery?
Inferior temporal branch and inferior nasal branch.
Where do the posterior ciliaries enter the eyeball?
Around optic nerve entrance.
At the end of the opthalmic artery in the orbit, what functions do the posterior and anterior ethmoidal arteries provide?
Supplies air cells and meningeal branches.
What branches are at the end of the opthalmic in orbit?
Lacrimal, long posterior ciliaries, posterior and anterior ethmoidal, supraorbital.
Where does the Opthalmic artery terminate?
Beneath the trochlea.
The anterior ciliary arteries arise from __________?
Recti tendons.
What are the branches of the nasal cavity?
ethmoidal arteries and external nasal branch of anterior ethmoidal.
What are the two important scalp arteries?
Supraorbital and supratrochlear.
What are the two fibrous connective tissues of closed lids?
Septum orbitale (less dense) and tarsus (more dense).
What branches penetrate the septum orbitale?
Lacrimal, supraorbital, and ophthalmic.
What two palpebrals form the palpebral arterial arcades?
Lacrimal's lateral superior and interior palpebrals.
The palpebral arterial arcades anastomse with the __________________________.
Medial palpebral's superior and inferior branches.
Where does the supraorbital send branches to?
Eyebrow, upper eyelid, and forehead.
Ophthalmic yields terminals ______________ to septum.
Posterior.
Where does the supratrochlear end?
Forehead.
What does the dorsal nasal yield?
Nose branches
What do the nose branches anastomose with?
Angular.