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Neuroanatomy > CNS Blood Supply > Flashcards

CNS Blood Supply Flashcards

1
Q

List the right anterior circulation of blood beginning at the L ventricle.

A
  1. L. ventricle
  2. Ascending aorta
  3. Brachiocephalic A.
  4. R. common carotid A.
  5. R. internal carotid A.
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2
Q

List the left anterior circulation of blood beginning at the L ventricle.

A
  1. L. ventricle
  2. Ascending aorta
  3. Aortic arch
  4. L. common carotid A.
  5. L internal carotid A.
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3
Q

List the right posterior circulation of blood beginning at the L. ventricle.

A
  1. L. ventricle
  2. Ascending aorta
  3. Brachiocephalic A.
  4. R. Subclavian A.
  5. R. Vertebral A.
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4
Q

List the left posterior circulation of blood beginning at the L. ventricle.

A
  1. L. ventricle
  2. Ascending Aorta
  3. Aortic arch
  4. L. Subclavian A.
  5. L. Vertebral A.
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5
Q

Which branch of circulation supplies most of the brain?

A

Anterior circulation

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6
Q

Where does the Anterior Cerebral Artery (ACA) run?

A

In the longitudinal fissure above the corpus callosum.

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7
Q

What does the ACA supply?

A
  1. Medial aspect of frontal and parietal lobes
  2. Cingulate cortex
  3. Corpus callosum
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8
Q

What are the 2 major branches of the ACA?

A
  1. Callosomarginal A. (above cortex)

2. Pericallosal A. (above corpus callosum)

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9
Q

What are the 3 divisions of the Middle Cerebral Artery (MCA)?

A
  1. Stem
    - Lenticulostriate arteries
  2. Superior division
    - everything above sylvian fissure.
  3. Inferior division
    - everything below sylvian fissure
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10
Q

What does the MCA supply?

A
  1. Lateral frontal lobe
  2. Lateral parietal lobe
  3. Insular cortex
  4. Medial and lateral temporal lobes
  5. Subcortical deep structures
    - Basal ganglia
    - internal capsule
    - limbic structures
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11
Q

Where does the Anterior Choroidal Artery arise from?

A

Off the internal carotid artery near where the MCA arises.

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12
Q

What does the anterior choroidal artery supply?

A
  1. Choroid plexus and lateral ventricle
  2. Optic tract
  3. Deep structures of telencephalon
    - Posterior limb of internal capsule
    - Portions of basal ganglia
    - Portions of thalamus
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13
Q

What is the circle of willis?

A

Anastomosis between ICA’s and Basilar artery.

Provides collateral blood flow between anterior and posterior circulations of brain as well as right and left hemispheres.

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14
Q

What are the components of the circle of willis?

A
  1. Anterior cerebral arteries
  2. Anterior communicating artery
    - connects two ACAs
  3. Posterior communicating arteries
    - connects MCAs to PCAs
  4. Posterior cerebral arteries
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15
Q

What does the posterior communicating arteries supply?

A

Diencephalon structures

  • thalamus
  • infundibulum
  • hypothalamus
  • pituitary
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16
Q

Where does the Posterior Cerebral Artery arise from?

A

From the basilar artery and travels posteriorly to occiput.

17
Q

The PCA has superficial branches. What are they and what do they supply?

A
  1. Anterior inferior temporal artery
  2. Posterior inferior temporal artery
  3. Calcarine arteries

Supply

  • Medial and inferior occipital lobes
  • Inferior temporal lobes
18
Q

The PCA had deep branches. What are they and what do they supply?

A
  1. Tuberothalamic A’s
  2. Thalamogeniculate A’s
  3. Posterior Choroidal A’s

Supply
- subcortical structures = midbrain, thalamus, subthalamic structures

19
Q

Where does the Posterior inferior cerebellar artery (PICA) arise from and what does it supply?

A

Arises at the level of medulla from the vertebral artery.

Supplies = lateral medulla and inferior cerebellum

20
Q

Where does the anterior spinal artery arise and what does it supply?

A

Arises from the vertebral artery.

Supplies = medial medulla and the anterior 2/3 of spinal cord

21
Q

Where does the posterior spinal artery arise from and what does it supply?

A

Branches off the posterior inferior cerebellar artery

Supplies = dorsal medial medulla and posterior 1/3 of spinal cord

22
Q

What does the basilar artery arise from?

A

The vertebral artery

23
Q

Where does the anterior inferior cerebellar artery (AICA) arise at? What does it supply?

A

Arises right after basilar artery forms at the level of the caudal pons.

Supplies = lateral caudal pons and cerebellum

24
Q

What do the labyrinthine arteries arise from? What do they supply?

A

Branches form AICA

Supplies = cochlea and vestibular apparatus

25
Q

Where do the pontine arteries arise from? What do they supply?

A

They are small circumferential arteries that arise from the basilar artery.

26
Q

Where do the superior cerebellar arteries arise from and what do they supply?

A

Arise from the basilar artery. Are the most rostral branch of the basilar artery prior to the PCA.

Supplies = cerebellum and rostral dorsolateral pons

27
Q

What the segmental radicular arteries? What are they important for?

A

Branches off the descending thoracic aorta.

Important for their vascularization of spinal nerve roots.

28
Q

The thoracic radicular artery supplies what structures?

A

It is supplemental blood supply to cervical and thoracic cord.

29
Q

The great radicular artery of adamkiewicz supplies what structures?

A

Major blood supply to lumbar and sacral cord.

Neuroanatomy (18 decks)

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