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blood vessels - exam 2

Terms in this set (47)

largest artery
aorta
external artery gives rise to
facial artery
maxillary artery
lingual artery
internal carotid artery gives rise to
ophthalmic artery
what is the main blood supply to globe and adnexa
ophthalmic artery
Branches of opthalmic (V1)
lacrimal artery
medial palpebral
muscular arteries
ciliary arteries
central retina artery
dorsonasal artery


ethmoid arteries
supraorbital artery
supratrochlear arteries
lacrimal artery

branches off ophthalmic artery after it enters the orbit and courses anteriorly along the upper border of
lateral rectus
lacrimal arteries supply the
lacrimal gland
lacrimal artery pierces orbital septum to enter UL and LL as
lateral paplepbral arteries
lateral palpebral arteries anastaomose with _____________ to form __________________
lateral palpebral arteries anastaomose with MEDIAL PALPEBRAL ARTERIES to form PALPEBRAL ARCADES
palpebral arcades supply
eyelids and palpebral and forniceal conjuctiva
medial palpebral artery and lateral paloebral arteries anastaomose to form
palpebral arcades
two sections of the palpebral arcades
1) marginal
2) peripheral
marginal palpebral arcade

anterior to
supplies what
anterior to: tarsal plate

supplies: UL and LL near eyelid margin, supplies cornea when eyelids are PROTRACTED
peripheral palpebral arcades

anterior to
anterior to: tarsal muller's muscle
peripheral palpebral arcades supplies
UL and LL near peripheral edge of tarsal plate
supplies forniceal conjuctiva
cornea when eyelids protracted
Palpebral arteries loop posteriorly to enter the bulbar conjunctiva and form what?
posterior conjuctival arteries
posterior conjuctival arteries supply
bulbar conjuctiva
posterior conjuctival arteries anastaomse with
anterior conjuctival arteries
muscular arteries lateral branch
supplies LR, SR, SO, levator muscles
muscualr arteries medial branch supplies
MR, IR, IO
pathway muscular artery
opthalmic -> muscular -> anterior ciliary artery -< anterior conjuctival arteries -> limbal arteries
vessels supplying rectus muscles continue anteriorly as
anterior ciliary arteries
anterior ciliary arteries how many
7
anterior ciliary arteries form the ___________- just anterior to rectus muscle insertions
episcleral circle
where are capillaries present in sclera
sclera avascular, but capillaries reside in episclera
episcleral artery form what plexus
deep and superficial episcleral plexus
superficial episcleral plexus
mobile,

if move conjuctiva, vessels also move
deep episcleral plexus
not mobile

vesseles anchored to superficial collagen fibers of sclera
are the plexi formed by the episcleral arterial circle visible
yes, visible through transparent conjuctiva
episcleral artery moves anterior to form
limbal vessels
What do limbal vessels supply?
Limbus and peripheral cornea
anterior ciliary arteries pierce sclera and anastomose with long posterior ciliary arteries and form
major arterial circle of iris

anterior choroid
anterior choroid
near ora serrata (is transition between choroid/peripheral retina and ciliary body)
anterior choroid contains
haller's layer, sattler's layer, choricocapillaris
anterior choroid supplies
outer 1/3 of anterior retina
anterior choroid anastomoses with
posterior choroid
when anterior ciliary arteries goes into bulbar conjuctiva it forms
anterior conjuctival arteries
anterior conjuctival arteries supply
bulbar conjuctiva
anterior conjuctival arteries anastaose with posterior conjuctival arteries to form
limbal vessels
ciliary arteries form
long posterior ciliary arteries
short posterior ciliary arteries
long posterior ciliary artery pierces sclera and courses anteriorly through
suprachoroid
when the long posterior ciliary artery reaches the ora serrata what does it do?
give off 3-5 branches
long posterior ciliary artery anastaomse to form
major arterial circle of iris
anterior choroid
short posterior ciliary arteries (1, 2, 3 branches)
give off 10-20 branches that pierce sclera around the ON
most branches of the short posterior ciliary arteries travel in _________ and help form_____________
most branches of the short posterior ciliary arteries travel in SUPRACHOROID and help POSTERIOR CHOROID
sclera vein drainage
episcleral vein -> anterior ciliary vein -> muscular -> sup or inferior opthalmic vein
conjuctiva drainage
conjuctiva -> conjuctival veins -> anterior ciliary veins -> muscular veins -> superior and inferior opthalmic vein
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