Key concepts: Blood supply to the brain

Question 1

conditions

Answer 1

stroke

Question 2

2 main blood vessels supplying the Brain

Answer 2

internal carotid, 80%
vertebral, 20%

Question 3

what do internal carotid do when they reach the brain

Answer 3

split into middle and anterior cerebral arteries

Question 4

what do internal carotid do before reaching the brain

Answer 4

split into anterior choroidal and posterior communicating

Question 5

middle cerebral supply

Answer 5

lateral surface of the cerebral hemispheres

Question 6

anterior cerebral supply

Answer 6

medial frontal and pariteal lobes
connected to the anterior communicating

Question 7

posterior communicating

Answer 7

connect the internal carotid to th posterior cerebral

Question 8

vertebral arteries give rise to

Answer 8

posterior inferior cerebellar PICA
anterior spinal

Question 9

supply of anterior spinal

Answer 9

anterior spinal cord

Question 10

posterior inferior cerebellar arteries PICA supply

Answer 10

inferior surface of the surface of the cerebellum

Question 11

what do the PICAs give rise to

Answer 11

posterior spinal arteries

Question 12

posterior spinal arteries supply

Answer 12

posterior spinal cord

Question 13

what is formed when the vertebral arteries join

Answer 13

basilar artery

Question 14

what does the basilar give rise to

Answer 14

anterior inferior and superior cerebellar arteries

Question 15

what happens when basilar reaches midbrain

Answer 15

splits into 2 posterior cerebral

Question 16

posterior cerebral supply

Answer 16

medial and inferior surfaces of occipital and temporal lobes

Question 17

components of the circle of willis

Answer 17

anterior cerebral
internal carotid
posterior cerebral

Question 18

label the image

Answer 18

Question 19

what is a watershed area and what problems could be associated

Answer 19

where 2 perfusion territories come together
vulnerable to severe drops in blood pressure (systemic)
and partial occlusion of major vessel

Question 20

examples of watershed areas

Answer 20

ACA MCA
MCA PCA

Question 21

pca perfusion territory

Answer 21

at the cortex the PCA supply:
meidal surface of the occipital and temporal lobes
inferior and medial parts of the temporal lobe
portions of the lateral temporal and occipital lobes

Question 22

Mca perfuson territory

Answer 22

as the Mca exits the lateral fissure the superior division supplies portions of the frontal and parietal cortex located above the fissure
inferior dividis supplies portions of the temporal and parietal cortex located below the fissure

Question 23

branches of the MCAq

Answer 23

lenticulostriate

Question 24

lenticulostriate arteries

Answer 24

deep branches of the MCA aswell as some additional branches of the ACA
supply large regions of the basal ganglia and internal capsule

Question 25

ACA perfusion territory

Answer 25

corpus callous

Question 26

anterior choroidal artery

Answer 26

Question 27

label supply to the brain superior view

Answer 27

Question 28

label the supply to the brain inferior view

Answer 28