lecture 2a- circulation Flashcards
origin of BS to CNS
carotid a + vertebral a
four segments of internal carotid artery
cervical segment
petrous segment
cavernous segment
supraclinoid segment
artery coming off cavernous segment
meningiohypophyseal a
arteries coming off of supraclinoid segment
opthalmic a
posterior communiciating a
anterior chorodial a
what does anterior chorodial a supply
deep anterior brain
internal carotid a ends by diving into
anterior cerebral
middle cerebral
what does anterior cerebral supply
medial and anterior cortex
what does middle cerebral supply
lateral cortex
where do lenticulostriate arteries branch off of
middle cerebral
what do lenticulostriate arteries supply
basal ganglia
superior division of middle cerebral supply
insula
inferior division of middle cerebral supplies
inner aspect of frontal, parietal, and temporal opercula
how much of the spinal cord do anterior spinal arteries supply
anterior 2/3 of spinal cord
what supplies posterior 1/3 of spinal cord
posterior spinal
where do 75 % of posterior spinal arteries branch off of
posterior inferior cerebellar arteries
what is within the circle of willis
optic chiasm and tracts infundibulum and tuber cinereum mammillary bodies hypothalamus CN 3 inter-peduncular fossa pituitary gland
what do ant cerebral arteries supply
anterior-medial cortex
what do post cerebral arteries supply
post-inf cortex
what do middle cerebral arteries supply
lateral cortex
where would one get stroke due to low BP
watershed zone
what two branches come off of the anterior cerebral artery
recurrent artery of heubner
anterior communicating artery
branches that come off the MCA
lenticulostirate
MCA superior division
MCA inferior division
what is the opercula region of the brain
region where frontal, parietal, and temporal lobes cover the insula
which three arteries are supplying mainly the medulla and spinal cord
anterior spinal
posterior inferior cerebellar arteries
posterior spinal
branches that come off the basilar
AICA, pontine, SCA
branches that come off the PCA
thalamoperforator
thalamogeniculate
posterior choroidal
which arteries supply the basal ganglia?
where do they come from
1) lenticulostriate a. recurrent artery of heubner, ant chorodial
2) lenticulostriate - MCA,
heubner- ACA
ant chorodial - ICA
anterior chorodial artery branches off of ?
internal carotid a
anterior chorodial supplies
basal ganglia, internal capsule, thalamus
branches of the posterior cerebral artery supply which structures of the brain
thalamus and internal capsule
which three arteries contribute to brainstem circulation
vertebral
basilar
posterior cerebral
what does the basilar artery supply
pons, midbrain, cerebellum
where do posterior spinal arteries branch off from
1/4 comes from vertebral
1/4 comes from PICA
location of cavernous sinus
between temporal and sphenoid bone
lateral to sella turcica
what passes through the cavernous sinus
internal carotid a
cn 3-6
deep brain structures are drained by
IJV
inferior sagittal sinus
great vein of galen
