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CNS > Lecture 6 - Cerebral Vasculature > Flashcards

Lecture 6 - Cerebral Vasculature Flashcards

1
Q

Go to the last slide and label all of the arteries:

A

1 = Basilar artery
2 = Vertebral artery
3 = Posterior Inferior Cerebellar Artery (PICA)
4 = Anterior Spinal Artery
5 = Anterior Inferior Cerebellar Artery (AICA)
6 = Pontine artery
7 = Superior Cerebellar Artery
8 = Posterior Cerebral Artery
9 = Posterior Communicating Artery
10 = Middle Cerebral Artery (continuation of the ICA)
11 = Anterior Cerberal Artery
12 = Anterior Communicating Artery

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2
Q

What are the 2 main blood vessels that supply the brain with blood?

A

Anterior circulation from Internal Carotid Arteries

Posterior circulation from vertebral arteries

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3
Q

What part of the brain does the anterior brain circulation (ICA) supply?

A

Most of the cerebral hemispheres

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4
Q

What part of the brain does the posterior circulation supply (vertebral vessels)?

A

Brainstem
Cerebellum
Some temporal and occipital lobe

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5
Q

What are the 2main arteries of the anterior circulation?

A

Middle cerberal artery
Anterior cerberal artery

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6
Q

How does the middle cerebral artery travel?

A

Emerges laterally inferiorly and superiolry to the lateral/sylvian fissure

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7
Q

What part of the brain does the middle cerebral artery supply thinking about how it travels?

A

Travels along sylvian/lateral fissure supplying the majority of the LATERAL aspect of the cortex including the lateal parts of the parietal, frontal and SUPERIOR temporal lobe

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8
Q

What is the name of the arteries that branch off the middle cerebral arteries and travel to the internal capsule?

A

Lenticulostriate arteries

Also supplies lentiform nucleus and caudate

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9
Q

What arteries are most commonly occluded in a stroke?
What is this called?

A

Lenticulostriate arteries

Lacunar stroke

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10
Q

How does the anterior cerebral artery run/what part of the brain does it supply generally?

A

Runs in the midline supplying the MIDLINE structures

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11
Q

What parts of the brain does the anterior cerebral artery supply?

A

Corpus callosum
Medial aspect of frontal lobe
Medial aspect of parietal lobe

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12
Q

Where is the deficit likely to be experienced in an anterior cerebral artery occlusion?

A

Lower limb since lower limbs are represented medially on the homunculus

And the anterior cerebral artery supplies the midline of the brain

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13
Q

What cerebral artery is most at risk of compression in a subfalcine herniation?

A

Calcarine sulcus pushed into the flax cerebra can compress the ANTERIOR Cerebral Artery

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14
Q

What artery if occluded would put the primary motor and sensory cortex at risk?

A

Middle cerbral artery since it covers the central gurus

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15
Q

What artery if occluded can lead to both superior and inferior optic radiations being damaged?

A

Middle cerebral artery

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16
Q

What forms the basilar artery?

A

Confluence of the vertebral arteries

17
Q

What is formed from the bifurcation of the basilar artery?

A

Posterior Cerebral Artery

18
Q

What does the posterior cerebral artery supply?

A

Occipital lobe
Inferior temporal lobe
Thalamus
MIDBRAIN en passant

19
Q

What connects the posterior cerebral artery to the middle cerebral artery?

A

Posterior communicating artery

20
Q

What does the superior Cerebellar artery supply?

A

Superior aspect of cerebellum and midbrain en passant

21
Q

What do the pontine arteries supply?

A

Pons including ht descending corticospinal fibres

22
Q

What does the anterior inferior Cerebellar artery supply?

A

Anteroinferior aspect of the cerebellum and lateral pons en passant

23
Q

How does the posterior cerebral artery run?

A

Loops around the midbrain running along the inferior surface of posterior hemisphere

24
Q

What are the 2 main arteries supplying the midbrain?

A

Posterior cerebral artery
Superior Cerebellar artery

25
Q

What disease can be caused by the pontine arteries being occluded and why?

A

Locked in syndrome

Corticospinal tract supplied by the pontine arteries

Eye moment is sparred since midbrain blood supply is fine

26
Q

What are the 2 main branches of the vertebral arteries that supply the brain?

A

Anterior spinal arteries

Posterior inferior Cerebellar arteries

27
Q

What does the posterior inferior Cerebellar arteries supply?

A

Postero-inferior aspect of the cerebellum en passant

28
Q

What part of the spinal cord does the anterior spinal artery supply?

A

Anterior 2/3s of spinal cord

Grey matter of ventral horns, cortical spinal tract and spinothalamic tract

29
Q

What part of the spinal cord does the posterior spinal artery supply?

A

Dorsal column and most of teh dorsal horns

30
Q

What artery do the thalmoperforator and thalmogeniculate arteries come from to supply the thalamus?

A

Posterior Cerebral Artery

CNS (21 decks)

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