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

Circulation of the CNS Flashcards

1
Q

Damage to the anterior cerebral artery generally presents…

A

Hemisensory and hemiparesis of the contralateral side’s lower limb

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

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1
Q

What supplies the medulla?

A

Anterior spinal artery

Vertebral artery

PICA

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3
Q

What does the posterior communicating artery connect?

A

Internal carotid artery and posterior cerebral artery

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5
Q

What percentage of the cardiac output does the brain receive?

A

10-20%

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5
Q

Where is the Circle of Willis located on the brain?

A

Around the midbrain and optic chiasm

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5
Q

What is supplied by the MCA?

A

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

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5
Q

What does the anterior choroidal artery branch off?

A

Internal carotid artery

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6
Q

Which of the cerebral arteries branch of the internal carotid?

A

Anterior cerebral artery

Middle cerebral artery

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7
Q

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

A

Basilar (right before the PCAs form)

Superior aspect of the cerebellum and a little of the midbrain

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8
Q

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

A

MCA

Basal ganglia and internal capsule

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9
Q

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

A

The anterior communicating artery

Optic chiasm and anterior hypothalamus

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10
Q

What is the course of the posterior cerebral artery?

A

They are the terminal branches of the basilar artery

They project out posteriorly towards the occipital lobe

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10
Q

Medial medullary syndrome is caused by what?

A

Damage to the anterior spinal artery

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11
Q

How many posterior vertebral arteries are their?

A

2

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12
Q

Where does the posterior inferior cerebellar artery usually branch off?

A

The vertebral arteries

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13
Q

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

A

PCA

Ventral midbrain

Posterior hypothalamus

Thalamus

14
Q

What does the anterior cerebral arteries supply?

A

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

15
Q

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

A

The carotid canal

16
Q

What supplies the midbrain?

A

Mostly the posterior cerebral artery

also the superior cerebellar artery

17
Q

Damage to the posterior cerebral artery generally presents how?

A

Contralateral hemianopia

19
Q

Damage to the MCA presents with what possible signs generally?

A

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

Language problems (Broca’s and Wernicke’s)

21
Q

What is the course of the vertebral artery?

A

Travels up through the transverse foramen and through the foramen magnum

22
Q

What is the course of the anterior cerebral artery?

A

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
Q

What are the cerebellar arteries?

A

Superior cerebellar artery

Anterior inferior cerebellar artery

Posterior inferior cerebellar artery

23
Q

What is the origin of the vertebral artery?

A

Subclavian

24
Q

Where does the anterior communicationg artery sit?

A

Between the two anterior cerebral arteries

25
Q

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

A

Internal carotid artery

Orbit

27
Q

What is the course of the middle cerebral artery?

A

Branches off the internal carotid

Projects out via the lateral fissure

28
Q

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

A

Vertebral basilar system

Internal carotid artery

29
Q

Where does the posterior cerebral artery branch off?

A

The basilar artery

31
Q

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

A

Basilar artery

Ventral pons

32
Q

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

A

First branch off the basilar

Supplies the inferior aspect of the cerebellum

33
Q

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

A

The vertebral arteries

Segmental branches of the aorta

Hugh's MD1 Neuro (41 decks)

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