Blood Supply to Brain

Question 1

Where do the internal carotid arteries enter the skull?

Answer 1

Carotid Canals

Question 2

Where do the vertebral arteries enter the skull?

Answer 2

The foramen magnum

Question 3

What does the circle of Willis surround?

Answer 3

The optic chiasma and the infundibulum of the pituitary stalk

Question 4

What links the anterior cerebral arteries?

Answer 4

The anterior communicating branches

Question 5

What does the basilar artery terminate as?

Answer 5

Two posterior cerebral arteries

Question 6

What links the posterior cerebral arteries to the internal carotid arteries?

Answer 6

Two posterior communicating branches

Question 7

What supplies the grey matter from the external surfaces of each hemisphere?

Answer 7

Superficial Cortical (pial) arteries

Question 8

What supplies the subcortical nuclei from the inferior surface?

Answer 8

Perforating arteries

Question 9

What part of the hemispheres do the anterior cerebral arteries supply?

Answer 9

The medial surfaces as far back as parieto-occipital sulci

Question 10

What gives off the recurrent artery of Heubner?

Answer 10

The anterior cerebral artery

Question 11

What do they posterior cerebral arteries supply?

Answer 11

The splenium of the corpus callosum and the cortex of the occipital and inferior temporal lobes

Question 12

What supplies the primary visual cortices?

Answer 12

The posterior cerebral artery

Question 13

Which arteries give off the posterior choroidal arteries?

Answer 13

The posterior cerebral arteries- supply choroid plexus of lateral ventricles

Question 14

Which arteries give off thalamoperforating branches?

Answer 14

The posterior cerebral arteries

Question 15

Which arteries are the posterior cerebral arteries embryologically derived from?

Answer 15

The internal carotids

Question 16

Which artery passes through the lateral fissure to the insula?

Answer 16

The middle cerebral artery

Question 17

Which artery gives off the lateral striate arteries?

Answer 17

The middle cerebral arteries

Question 18

What is the chief cause of classical stroke?

Answer 18

Occlusion of the lateral striate arteries

Question 19

What does the upper division of the middle cerebral artery supply?

Answer 19

The frontal and anterior parietal lobes from their lateral surfaces

Question 20

What does the lower division of the middle cerebral artery supply?

Answer 20

The posterior parietal lobe, superior temporal lobe and midregion of optic radiation

Question 21

Which arteries supply the midbrain?

Answer 21

Posterior cerebral and posterior communicating arteries

Question 22

Which artery gives off the labyrinthine artery?

Answer 22

Anterior inferior cerebellar artery

Question 23

Where are the superficial cerebral veins located?

Answer 23

The subarachnoid space

Question 24

Where do the superficial cerebral veins drain to?

Answer 24

The intracranial venous sinus

Question 25

Where does the upper part of each hemisphere drain to?

Answer 25

The sagittal sinus via superior cerebral veins

Question 26

Where does the middle part of each hemisphere drain to?

Answer 26

The cavernous sinus via superficial middle cerebral vein

Question 27

Where does the lower part of each hemisphere drain to?

Answer 27

Transverse sinuses

Question 28

Which veins drain the subcortical nuclei?

Answer 28

Deep cerebral veins

Question 29

What does the talamostriate vein drain?

Answer 29

The thalamus and caudate nucleus

Question 30

Which veins unite to form the internal cerebral vein?

Answer 30

The thalamostriate vein and a choroidal vein

Question 31

Which veins unite to form the great cerebral vein of Galen?

Answer 31

The two internal cerebral veins

Question 32

Where does the basal vein empty to?

Answer 32

The great cerebral vein of Galen

Question 33

What controls cerebral blood flow?

Answer 33

Autoregulation

Question 34

What do astrocytes in BBB express?

Answer 34

Aquaporin 4 water channels