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Neuroanatomy > Exam #3: Blood Supply II > Flashcards

Exam #3: Blood Supply II Flashcards

1
Q

What artery supplies the anterior circulation to the brain?

A

Internal Carotid Artery

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2
Q

What artery supplies the posterior circulation to the brain?

A

Vertebral/ Basilar Artery

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3
Q

What is the first branch off the internal carotid artery?

A

Ophthalmic a.

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4
Q

What are the branches of the internal carotid artery?

A
  • Ophthalmic a.
  • Anterior & posterior communicating
  • Anterior choroidal a.
  • Anterior cerebral a.
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5
Q

What is the anterior choroidal a. going to?

A

Choroid plexus

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6
Q

What are the branches of the anterior cerebral artery?

A

Ascending from the anterior cerebral artery in the midline:

  • Distal medial striate a. i.e. “Recurrent artery of Heubner”
  • Medial frontobasal a.
  • Pericallosal a.
  • Callosomarginal a.
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7
Q

What is the difference between the number of anterior communicating and posterior communicating arteries?

A

1x Anterior Communicating

2x Posterior Communicating

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8
Q

What structures border the anterior choroidal a. i.e. what structures besides the choroid plexus does the anterior choroidal a. supply?

A
  • Crus Cerebri
  • Thalamus- (Lateral geniculate body)
  • Poster limb of internal capsule
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9
Q

What does the Recurrent Artery of Heubner supply?

A

Anterior aspect of the deep cerebral nuclei

  • Head of caudate
  • Putamen
  • Internal capsule
  • Globus Pallidus

I.e. Recurrent artery of Heubner supplies the basal ganglia

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10
Q

What surface of the cortex does the PCA supply?

A

Inferior temporal a.

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11
Q

What does the pericallosal a. supply?

A

Recall that the anterior cerebral a. runs along the corpus callosum; however, specifically one of the branches is:

  • Pericallosal= just above of the corpus callosum
  • Takes a more posterior course & supplies more of the lateral parietal lobe
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12
Q

What does the callosomarginal a. supply?

A

Recall that the anterior cerebral a. runs along the corpus callosum; however, specifically one of the branches is:
- This branch runs superior & anterior to the pericollosal a.

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13
Q

On coronal section, if you don’t see thalamus, what part of the anterior capsule are you looking at?

A

Anterior limb

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14
Q

What part of the internal capsule is supplied by the Recurrent Artery of Hubner?

A

Anterior limb

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15
Q

What are the lenticulostriate arteries branches of?

A

MCA

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16
Q

What do the lenticulostriate arteries supply? What do these arteries anastamose with?

A
  • Basal ganglia with the Recurrent Artery of Heubner

- Internal capsule

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17
Q

What are the major divisions of the MCA?

A

Superior & Inferior

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18
Q

What does the Superior MCA supply?

A
  • Cortex above the lateral fissure
  • Lateral frontal cortex i.e. pre & post-central gyrus

*****Trunk, arm, face

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19
Q

What does the Inferior MCA supply?

A
  • Cortex below the lateral fissure
  • Lateral temporal lobe & parts of the parietal lobe

*****Hippocampus, which is in the deep temporal lobe

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20
Q

What language area is supplied by the Inferior MCA?

A

Wernicke’s area

21
Q

If a patient has an inferior MCA infarct, what will their presentation be in regards to language?

A

Wernicke’s aphasia i.e. gibberish

22
Q

What arteries supply the hypothalamus?

A

Penetrating/ perforating/ ganglionic arteries–all refer to the same arteries that emerge from the Circle of Willis

23
Q

What are the watershed zones?

A

Regions between two arterial branches serving a specific region

24
Q

What causes a “watershed infarct?”

A

Sudden loss of arterial blood pressure

25
Q

What are the different horns of the lateral ventricle?

A

Frontal horn
Temporal horn
Occipital horn

26
Q

What basal nucli is the anterior limb of the internal capsule between?

A

Caudate & putamen

27
Q

What basal nuceli border the posterior limb?

A

Thalamus (medial) & GP/ Putamen (lateral)

28
Q

What tracts pass through the posterior limb of the internal capsule?

A

Corticospinal tracts

29
Q

Where is “stroke city?”

A

Where the lenticulostriate arteries supply

  • large to small artery transition (MCA to lenticulostriate)
  • 90 degree angles
30
Q

Where do the vertebral arteries unit?

A

Pontomedullary junction

31
Q

What arteries do the vertebral arteries give off prior to joining to from the basilar artery?

A

Anterior spinal arteries

32
Q

What regions of the brainstem do the anterior spinal arteries supply? What are the different brain regions that are in the medial zone?

A

Medial zone

*****Pyramids, ML, hypoglossal nucleus

33
Q

What regions of the brainstem do the posterior spinal arteries supply?

A

Posterior zone

34
Q

What does PICA supply?

A
  • Posterior inferior aspect of the cerebellum

- Lateral medulla

35
Q

What are the landmarks for the closed medulla?

A
  • Inferior olivary nucleus
  • Pyramids
  • No 4th ventricle
36
Q

What supplies the intermediate zone of the medulla?

A

Vertebral artery

37
Q

What artery supplies the spinothalamic tract in the medulla?

A

PICA

38
Q

What does the MLF connect? What artery supplies the MLF?

A

CN III, IV, VI

*****Supplied by the Anterior Spinal Artery

39
Q

What artery supplies the Inferior Cerebral Peduncle? What does the Inferior Cerebral Peduncle do?

A

PICA

*Connects the cerebellum to the medulla

40
Q

What is the only sensory CN that is located in the pons?

A

Vestibular cochlear (CN VIII)

41
Q

What does AICA supply?

A

Anterior inferior cerebellum

42
Q

What is the pure motor CN nuclei in the pons?

A

Abducens

43
Q

What is the terminal branch of the basilar artery?

A

Posterior Cerebral Artery

44
Q

What does the PCA supply?

A
  • Occipital lobe
  • Tectum of Midbrain
  • Thalamus
  • Hippocampus
45
Q

What branch of the PCA supplies the Tectum of Midbrain?

A

Quadrigeminal a.

46
Q

What two arteries can the quadrigeminal a. branch from?

A

PCA

Superior cerebellar a.

47
Q

What are the thalamoperforator or thalamogeniculate a.?

A

Branches of the PCA that go to the Thalamus

48
Q

What artery is the Calcarine branch a branch of?

A

PCA

49
Q

What part of the cortex is supplied by the calcarine bracnh of the PCA?

A

Priamry visual cortex

Neuroanatomy (36 decks)

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