Vertebral Arteries - Lecture 3

Question 1

where do the vertebral arteries arise from

Answer 1

subclavian artery

Question 2

branches of vertebral artery

Answer 2

anterior spinal arteries

posterior inferior cerebellar arteries

Question 3

where do the 2 vertebral arteries join

Answer 3

junction of the pons and medulla

Question 4

what do the 2 vertebral arteries form

Answer 4

basilar artery

Question 5

what does the basilar artery divide into

Answer 5

2 posterior cerebral arteries

Question 6

where does the spinal cord receive its blood supply from

Answer 6

branches of the vertebral arteries

multiple radicular arteries

Question 7

vertebral arteries –> SC

Answer 7

major source of blood supply via anterior spinal and posterior spinal arteries

Question 8

multiple radicular arteries –> SC

Answer 8

derives sporadically from segmental arteries

Question 9

where does the brain stem receive its blood from

Answer 9

brain steam (medulla, pons, midbrain) receives the bulk of its blood from the vertebrobasilar system

Question 10

what doesn’t receive blood from the vertebrobasilar system

Answer 10

labyrinthine branch

supplies inner ear

Question 11

basilar artery divides into

Answer 11

anterior inferior cerebellar arteries (AICA)

superior cerebellar arteries

posterior cerebella arteries

Question 12

anterior inferior cerebellar arteries origin

Answer 12

near the lower border of the pons just past the union of the vertebral arteries

Question 13

AICA supply

Answer 13

anterior inferior surface and underlying white matter of cerebellum

Question 14

AICA contributes to

Answer 14

supply of central cerebellar nuclei

upper medulla and lower pontine areas

Question 15

superior cerebellar arteries origin

Answer 15

near the end of the basilar artery

close tot he pons-midbrain junction

Question 16

how does the superior cerebellar arteries run

Answer 16

along dorsal surface of cerebellum

Question 17

superior cerebellar arteries supply

Answer 17

cerebellar cortex

white matter

central nuclei

Question 18

superior cerebellar arteries contribute to

Answer 18

rostral pontine tegmentum

superior cerebellar peduncle

inferior colliculus

Question 19

posterior cerebral artery supply

Answer 19

temporal and occipital lobes

Question 20

posterior cerebral artery surface branches supply

Answer 20

cortex and white matter of medial occipital lobes

inferior temporal lobes

posterior corpus callosum

Question 21

posterior cerebral artery penetrating branches supply

Answer 21

parts of thalamus

parts of the midbrain

Question 22

posterior inferior cerebellar artery (PICA) origin

Answer 22

from the largest branch of the vertebral artery

one of the main 3 arterial blood supplies for the cerebellum

Question 23

posterior choroidal arteries origin

Answer 23

near the basilar bifurcation into the posterior cerebral arteries

Question 24

posterior choroidal arteries reinforce

Answer 24

midbrain short and long circumferential arteries

Question 25

posterior choroidal arteries supply

Answer 25

portions of the diencephalon and the choroid plexus of the 3rd and lateral ventricles