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CHAPTER 2: Vascular Supply of the Central Nervous System

The primary visual cortex is supplied primarily by the:

A. middle cerebral artery.

B. anterior cerebral artery.

C. posterior cerebral artery.

D. lenticulostriate branches of the MCA.

E. basilar artery.

C. posterior cerebral artery.

The ventricular system:

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

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

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

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

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

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

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

A. Posterior cerebral artery

B. Anterior communicating artery

C. Superior cerebellar artery

D. Anterior cerebral artery

E. Posterior communicating artery

C. Superior cerebellar artery

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

A. frontal view of the brain.

B. medial or lateral view of the brain.

C. frontal-inferior view of the brain.

D. posterior view of the brain.

B. medial or lateral view of the brain.

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?

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

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

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

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