Circulation of the CNS Flashcards Preview

Hugh's MD1 Neuro > Circulation of the CNS > Flashcards

Flashcards in Circulation of the CNS Deck (33):
1

Damage to the anterior cerebral artery generally presents...

Hemisensory and hemiparesis of the contralateral side's lower limb

(Corresponding to damage to the medial aspect of the primary motor and somatosensory cortex)

1

What supplies the medulla?

Anterior spinal artery

Vertebral artery

PICA

3

What does the posterior communicating artery connect?

Internal carotid artery and posterior cerebral artery

5

What percentage of the cardiac output does the brain receive?

10-20%

5

Where is the Circle of Willis located on the brain?

Around the midbrain and optic chiasm

5

What is supplied by the MCA?

Lateral aspect of the frontal, temporal, parietal and occipital lobes and the insula

5

What does the anterior choroidal artery branch off?

Internal carotid artery

 

6

Which of the cerebral arteries branch of the internal carotid?

Anterior cerebral artery

Middle cerebral artery

7

Where does the superior cerebellar artery branch off and what does it supply?

Basilar (right before the PCAs form)

Superior aspect of the cerebellum and a little of the midbrain

8

Where do the lenticulostriate branches come off and what do they supply?

MCA

Basal ganglia and internal capsule

9

Where do the anterior perforating branches come off and what do they supply?

The anterior communicating artery

Optic chiasm and anterior hypothalamus

10

What is the course of the posterior cerebral artery?

They are the terminal branches of the basilar artery

They project out posteriorly towards the occipital lobe

10

Medial medullary syndrome is caused by what?

Damage to the anterior spinal artery

11

How many posterior vertebral arteries are their?

2

12

Where does the posterior inferior cerebellar artery usually branch off?

The vertebral arteries

13

Where do the posterior perforating branches come off and what do they supply?

PCA

Ventral midbrain

Posterior hypothalamus

Thalamus

14

What does the anterior cerebral arteries supply?

The medial aspect of the frontal lobes and medial superior aspect of the parietal lobe

 

15

Through which hole does the internal carotid artery enter the brain?

The carotid canal

16

What supplies the midbrain?

Mostly the posterior cerebral artery

also the superior cerebellar artery

17

Damage to the posterior cerebral artery generally presents how?

Contralateral hemianopia

19

Damage to the MCA presents with what possible signs generally?

Motor and sensory problems for contralateral side (excluding the lower limb)

Language problems (Broca's and Wernicke's)

21

What is the course of the vertebral artery?

Travels up through the transverse foramen and through the foramen magnum

22

What is the course of the anterior cerebral artery?

Branches off the internal carotid artery lateral to the optic chiasm. 

Travels anteriorly in the longitudinal fissure.

Hooks around the genu of the corpus callosum

22

What are the cerebellar arteries?

Superior cerebellar artery

Anterior inferior cerebellar artery

Posterior inferior cerebellar artery

23

What is the origin of the vertebral artery?

Subclavian

24

Where does the anterior communicationg artery sit?

Between the two anterior cerebral arteries

25

What does the ophthalmic artery branch off and what does it supply?

Internal carotid artery

Orbit

27

What is the course of the middle cerebral artery?

Branches off the internal carotid

Projects out via the lateral fissure

28

What are the two systems that contribute to the circle of Willis?

Vertebral basilar system

Internal carotid artery

29

Where does the posterior cerebral artery branch off?

The basilar artery

31

Where do the pontine branches come off and what do they supply?

Basilar artery

Ventral pons

32

Where does the anterior inferior cerebellar artery branch off and what does it supply?

First branch off the basilar

Supplies the inferior aspect of the cerebellum

33

What is the anterior spinal artery a branch of? What tops it up down the spinal cord?

The vertebral arteries

Segmental branches of the aorta