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54 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What two components make up the ophthalmic artery?
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Middle cranial fossa & optic canal pathway
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Where does the middle cranial fossa and optic canal pathway originate?
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Internal carotid (medial to anterior clinoid, after carotid has exited cavernous sinus roof)
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P11
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The ophthalmic artery travels with _______ inside _________ suspended in _____ of ______.
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optic nerve, optic canal, dura, optic nerve.
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Where does the ophthalmic artery enter the orbit?
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lateral and inferior part of optic canal.
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Where does the orbital pathway branches of the ophthalmic artery begin?
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When the ophthalmic artery leaves the optic canal.
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Which two muscles does the ophthalmic artery travel between?
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Medial rectus and superior oblique muscles.
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What are the 10 major orbital branches?
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Central retinal, lacrimal, muscular, posterior ciliary artery, supraorbital artery, posterior ethmoidal artery, anterior ethmoidal artery, medial palpebral, supratrochlear, and dorsal nasal artery.
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Name the 5 branches of the lacrimal branch.
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Recurrent meningeal, (anastomoses with middle meningeal), muscular, zygomatic, glandular, and lateral palpebral.
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Where does the muscular branch of the lacrimal branch go?
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adjacemt lateral rectus.
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Where does the zygomatic branches of the lacrimal branch exit?
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Orbit in zygomatic foramen
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What does the glandular branches of the lacrimal branch supply?
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main lacrimal gland.
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Where does the lateral palpebral of the lacrimal branch exit and what branches does it divide into? What does it supply?
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Exits orbit to divide into superior and inferior branches to supply lids.
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Muscular branches of opthalmic go to any ______________ close by.
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Rectus muscle
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Where do posterior ciliary arteris oiginate? Where do they end?
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Orbit; eye.
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How many long posterior ciliary arteris travel to the ciliary body? How any shorts travel to the choroid?
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Two longs, 10-20 shorts.
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Where does the supraorbital artery exit?
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Exits the orbit at supraorbital notch.
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What are the two branches of the supraorbital artery?
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Muscular and scalp
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Where doe the muscular branches go to?
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Adjacent muscles near orbital rood.
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Where do the scalp branches go?
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Up the forehead.
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Does the Posterior ethmoidal artery supply in the orbit? Where does it exit?
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No, there is no supply in orbit and it exits into ethmoid.
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The Anterior ethmoidal artery is _____ than posterior thmoidal artery? (larger/smaller)
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Larger
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Where does the medial palpebral exit? What does it supply?
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Exits orbit to supply lids with superior and inferior branches.
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What is another name for the supratrochlear artery?
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Frontal artery.
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What does the supratrochlear artery supply?
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Scalp branches.
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What does the central retinal artery penetrate of the optic nerve?
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Dura
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When the opthalmic artery exits the canal and enters the apex of the orbit, what does the dura do?
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Splits to become periosteum or orbit and dura of intraorbital optic nerve.
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Where does the central retinal artery penetrate the dura of the optic nerve?
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Midway between the eyeball and optic foramen.
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The central retinal artery has a pathway in subarachnoid space. What allows it to resist CSF pressure?
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It's thick wall resists any increased CSF pressure.
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Where does the central retinal artery bend to run to the disc?
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At the center of the nerve.
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What are the two branches of the central retinal in optic nerve?
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Pial plexus and pial septal
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Where does the Pial plexus travel?
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Uit comes off of the posterior ciliary plexus.
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Where does the pial septal branch travel?
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Into the optic nerve.
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What does the central retinal in the optic nerve penetrate?
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Lamina cribrosa
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Where does the central retinal artery terminate?
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In the disc, as superior and inferior retinal arteries.
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What tissue coers the central retinal artery and vein while in the center of the optic nerve?
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Pial central connective tissue.
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The central retinal artery splits into two retinal arteries. Name them.
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Superior retinal artery and inferior retinal artery.
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What are the branches of the superior retinal artery?
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Superior temporal branch and superior nasal branch.
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What are the branches of the inferior retinal artery?
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Inferior temporal branch and inferior nasal branch.
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Where do the posterior ciliaries enter the eyeball?
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Around optic nerve entrance.
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At the end of the opthalmic artery in the orbit, what functions do the posterior and anterior ethmoidal arteries provide?
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Supplies air cells and meningeal branches.
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What branches are at the end of the opthalmic in orbit?
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Lacrimal, long posterior ciliaries, posterior and anterior ethmoidal, supraorbital.
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Where does the Opthalmic artery terminate?
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Beneath the trochlea.
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The anterior ciliary arteries arise from __________?
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Recti tendons.
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What are the branches of the nasal cavity?
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ethmoidal arteries and external nasal branch of anterior ethmoidal.
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What are the two important scalp arteries?
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Supraorbital and supratrochlear.
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What are the two fibrous connective tissues of closed lids?
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Septum orbitale (less dense) and tarsus (more dense).
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What branches penetrate the septum orbitale?
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Lacrimal, supraorbital, and ophthalmic.
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What two palpebrals form the palpebral arterial arcades?
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Lacrimal's lateral superior and interior palpebrals.
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The palpebral arterial arcades anastomse with the __________________________.
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Medial palpebral's superior and inferior branches.
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Where does the supraorbital send branches to?
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Eyebrow, upper eyelid, and forehead.
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Ophthalmic yields terminals ______________ to septum.
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Posterior.
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Where does the supratrochlear end?
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Forehead.
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What does the dorsal nasal yield?
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Nose branches
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What do the nose branches anastomose with?
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Angular.
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