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CHAPTER 2: Vascular Supply of the Central Nervous System

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The primary visual cortex is supplied primarily by the:

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A. middle cerebral artery.

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B. anterior cerebral artery.

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C. posterior cerebral artery.

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D. lenticulostriate branches of the MCA.

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E. basilar artery.

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C. posterior cerebral artery.

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The ventricular system:

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A. contains the interventricular foramina that allow CSF to pass directly into the fourth ventricle.

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B. has arachnoid granulations that empty directly into the subarachnoid space.

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C. circulation can be blocked without usually causing significant problems.

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D. has a cerebral aqueduct that is the defining ventricular structure of the midbrain.

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E. has foramina of Luschka connecting the lateral ventricles with the third ventricle.

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D. has a cerebral aqueduct that is the defining ventricular structure of the midbrain.

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Which of the following arteries is not part of the circle of Willis?

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A. Posterior cerebral artery

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B. Anterior communicating artery

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C. Superior cerebellar artery

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D. Anterior cerebral artery

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E. Posterior communicating artery

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C. Superior cerebellar artery

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The course of the anterior cerebral artery is best shown with an arteriogram that provides a:

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A. frontal view of the brain.

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B. medial or lateral view of the brain.

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C. frontal-inferior view of the brain.

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D. posterior view of the brain.

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B. medial or lateral view of the brain.

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A 38-year-old male suspected of having Guillian-Barré syndrome will have a lumbar tap to sample protein content in CSF. Which of the following best explains why CSF sampling is by lumbar tap?

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A. CSF pools within the subarachnoid space located at the most inferior portion of the CNS.

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B. CSF exits from the ventricular system at the caudal terminus of the vertebral column.

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C. The lumbar cistern is the only part of the subarachnoid ...

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