lecture 2a- circulation

Question 1

origin of BS to CNS

Answer 1

carotid a + vertebral a

Question 2

four segments of internal carotid artery

Answer 2

cervical segment
petrous segment
cavernous segment
supraclinoid segment

Question 3

artery coming off cavernous segment

Answer 3

meningiohypophyseal a

Question 4

arteries coming off of supraclinoid segment

Answer 4

opthalmic a
posterior communiciating a
anterior chorodial a

Question 5

what does anterior chorodial a supply

Answer 5

deep anterior brain

Question 6

internal carotid a ends by diving into

Answer 6

anterior cerebral

middle cerebral

Question 7

what does anterior cerebral supply

Answer 7

medial and anterior cortex

Question 8

what does middle cerebral supply

Answer 8

lateral cortex

Question 9

where do lenticulostriate arteries branch off of

Answer 9

middle cerebral

Question 10

what do lenticulostriate arteries supply

Answer 10

basal ganglia

Question 11

superior division of middle cerebral supply

Answer 11

insula

Question 12

inferior division of middle cerebral supplies

Answer 12

inner aspect of frontal, parietal, and temporal opercula

Question 13

how much of the spinal cord do anterior spinal arteries supply

Answer 13

anterior 2/3 of spinal cord

Question 14

what supplies posterior 1/3 of spinal cord

Answer 14

posterior spinal

Question 15

where do 75 % of posterior spinal arteries branch off of

Answer 15

posterior inferior cerebellar arteries

Question 16

what is within the circle of willis

Answer 16

optic chiasm and tracts
infundibulum and tuber cinereum
mammillary bodies
hypothalamus
CN 3
inter-peduncular fossa
pituitary gland

Question 17

what do ant cerebral arteries supply

Answer 17

anterior-medial cortex

Question 18

what do post cerebral arteries supply

Answer 18

post-inf cortex

Question 19

what do middle cerebral arteries supply

Answer 19

lateral cortex

Question 20

where would one get stroke due to low BP

Answer 20

watershed zone

Question 21

what two branches come off of the anterior cerebral artery

Answer 21

recurrent artery of heubner

anterior communicating artery

Question 22

branches that come off the MCA

Answer 22

lenticulostirate
MCA superior division
MCA inferior division

Question 23

what is the opercula region of the brain

Answer 23

region where frontal, parietal, and temporal lobes cover the insula

Question 24

which three arteries are supplying mainly the medulla and spinal cord

Answer 24

anterior spinal
posterior inferior cerebellar arteries
posterior spinal

Question 25

branches that come off the basilar

Answer 25

AICA, pontine, SCA

Question 26

branches that come off the PCA

Answer 26

thalamoperforator
thalamogeniculate
posterior choroidal

Question 27

which arteries supply the basal ganglia?

where do they come from

Answer 27

1) lenticulostriate a. recurrent artery of heubner, ant chorodial

2) lenticulostriate - MCA,
heubner- ACA
ant chorodial - ICA

Question 28

anterior chorodial artery branches off of ?

Answer 28

internal carotid a

Question 29

anterior chorodial supplies

Answer 29

basal ganglia, internal capsule, thalamus

Question 30

branches of the posterior cerebral artery supply which structures of the brain

Answer 30

thalamus and internal capsule

Question 31

which three arteries contribute to brainstem circulation

Answer 31

vertebral
basilar
posterior cerebral

Question 32

what does the basilar artery supply

Answer 32

pons, midbrain, cerebellum

Question 33

where do posterior spinal arteries branch off from

Answer 33

1/4 comes from vertebral

1/4 comes from PICA

Question 34

location of cavernous sinus

Answer 34

between temporal and sphenoid bone

lateral to sella turcica

Question 35

what passes through the cavernous sinus

Answer 35

internal carotid a

cn 3-6

Question 36

deep brain structures are drained by

Answer 36

IJV
inferior sagittal sinus
great vein of galen