Question 1

Which of the following best describes the primary function of the thalamus in the brain?

Accepted Answer

It relays and processes sensory information to the cerebrum, acting as a 'gatekeeper.'

Question 2

A patient suffers a stroke that damages the precentral gyrus of the left cerebral hemisphere. Which of the following deficits is most likely to occur?

Accepted Answer

Loss of voluntary motor control on the right side of the body

Question 3

Which of the following structures is responsible for producing cerebrospinal fluid (CSF)?

Accepted Answer

Ependymal cells of the choroid plexus

Question 4

Which of the following is NOT a function of cerebrospinal fluid (CSF)?

Accepted Answer

Transmitting electrical impulses between neurons

Question 5

A patient presents with a subdural hematoma. Between which two layers of the cranial meninges has the bleed occurred?

Accepted Answer

Between the dura mater and the arachnoid mater

Question 6

Which of the following best explains why lipid-soluble drugs can cross the blood-brain barrier more easily than water-soluble drugs?

Accepted Answer

Lipid-soluble compounds can diffuse directly across endothelial cell membranes.

Question 7

Which of the following dural folds separates the two cerebral hemispheres?

Accepted Answer

Falx cerebri

Question 8

A patient with damage to the cerebellum is most likely to experience which of the following symptoms?

Accepted Answer

Difficulty with coordination and balance

Question 9

Which of the following statements about the spinal cord is correct?

Accepted Answer

The cauda equina consists of nerve roots extending below the conus medullaris.

Question 10

Which of the following best describes the function of the basal nuclei?

Accepted Answer

They coordinate voluntary motor activity and inhibit unwanted movements.

Question 11

Which of the following is a correct pathway for the flow of cerebrospinal fluid (CSF) in the brain?

Accepted Answer

Lateral ventricles → third ventricle → cerebral aqueduct → fourth ventricle

Question 12

Which of the following best describes the role of the hypothalamus?

Accepted Answer

It is the major control center for the endocrine and autonomic nervous systems.

Question 13

Which of the following is TRUE regarding the organization of white matter in the cerebrum?

Accepted Answer

Commissural fibers connect the two cerebral hemispheres.

Question 14

A patient is unable to form new long-term memories but can recall old memories. Which brain structure is most likely damaged?

Accepted Answer

Hippocampus

Question 15

Which of the following best describes the function of the limbic system?

Accepted Answer

Establishment of emotional states and facilitation of memory storage and retrieval

Question 16

Which of the following is a function of the medulla oblongata?

Accepted Answer

Regulation of heart rate, blood pressure, and digestion

Question 17

Which of the following statements about the blood-brain barrier is correct?

Accepted Answer

It is selectively permeable, allowing lipid-soluble compounds to diffuse across endothelial cells.

Question 18

Which of the following best describes the function of the prefrontal cortex?

Accepted Answer

It plans and executes behaviors, establishes personality, and decides right from wrong.

Question 19

Which of the following is TRUE regarding the spinal meninges?

Accepted Answer

The epidural space is present only in the spine, not in the cranium.

Question 20

Which of the following best explains the role of the cerebellum in voluntary movement?

Accepted Answer

It compares intended movement with actual performance and adjusts motor output to reduce error.

The Central Nervous System: Structure, Protection, and Function

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