Opt 114 visual pathway: blood supply (optic chiasm, tract, radiation, primary visual cortex)

what vessels supply the optic chiasm

circle of willis, superior hypophyseal artery

what arteries make up the circle of willis

-anterior communicating

-2 anterior cerebral

-2 internal carotid

-2 posterior cerebral

-2 posterior communicating

which vessels of the optic chiasm don't come from the internal carotid

posterior cerebral arteries

what vessel do the posterior cerebral arteries come from

basilar artery

what vessel does the basilar artery come from

vertebral arteries

what vessels supply the optic tract

anterior choroidal, middle cerebral

what vessel runs parallel to the optic tract

anterior choroidal artery

how much of the optic tract is supplied by the middle cerebral artery

small part

how many vessels supply the optic radiations

3

what vessels supply the optic radiations

anterior choroidal, middle cerebral, posterior cerebral arteries

what portion of the optic radiations is supplied by the anterior choroidal artery

anterior portion

what portion of the optic radiations is supplied by the middle cerebral artery

all portions (anterior, middle, posterior)

which branch of the middle cerebral artery supplies the optic radiations

deep branch

what portion of the optic radiations is supplied by the posterior cerebral artery

posterior portion

what vessels supply the primary visual cortex

posterior cerebral artery, middle cerebral artery

which vessel that supplies the primary visual cortex only does so in some people

middle cerebral artery

what portion of the primary visual cortex does the middle cerebral artery contribute to

macular portion

if there is a blockage in the posterior cerebral artery what happens to vision

lose whole half of vision in both eyes

if the middle cerebral artery is present in the primary visual cortex what happens to vision with a posterior cerebral artery occlusion

macular sparing but the rest of vision in the hemifield is gone

how many arteries supply the lateral geniculate nucleus

2

what are the arteries supplying the lateral geniculate nucleus

-anterior choroidal artery

-posterior cerebral artery