circle of willis

Question 1

what forms the circle of willis?

Answer 1

two carotid arteries

two vertebral arteries

Question 2

what surface of the brain is the circle of willis formed on?

Answer 2

inferior surface of the brain

Question 3

each half of the circle is formed by:

Answer 3

anterior communicating artery 
anterior cerebral artery 
internal carotid artery 
posterior communicating artery 
posterior cerebral arteries and the termination of the basilar artery

Question 4

the circle and its branches supply:

Answer 4

the corpus striatum, internal capsule, diencephalon, and midbrain.

Question 5

vertebral arteries enter the cranial cavity via:

Answer 5

formamen magnum

Question 6

where do vertebral arteries lie?

Answer 6

subarachnoid space

Question 7

where do vertebral arteries ascend?

Answer 7

on anterior surface of medulla oblongata

Question 8

vertebral arteries unite at the base of the pons to form -

Answer 8

basilar artery

Question 9

branches of vertebral arteries

Answer 9

posterior spinal artery
anterior spinal artery
posterior inferior cerebellar artery

Question 10

basilar artery branches

Answer 10

anterior inferior cerebellar artery 
labyrinthine artery 
pontine arteries 
superior cerebellar artery 
posterior cerebral artery

Question 11

internal carotid arteries branches:

Answer 11

posterior communicating artery
anterior choroid artery
anterior cerebral artery
middle cerebral artery

Question 12

anterior cerebral artery supplies:

Answer 12

part of the frontal and parietal lobes

Question 13

middle cerebral artery supplies:

Answer 13

part of the frontal, temporal and parietal lobes