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 left precentral gyrus. Which of the following symptoms is most likely to occur?

Accepted Answer

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

Question 3

Which structure is responsible for producing cerebrospinal fluid (CSF) in the brain?

Accepted Answer

Ependymal cells of the choroid plexus

Question 4

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

Accepted Answer

Transmitting electrical impulses between neurons

Question 5

A patient presents with loss of coordination, difficulty with timekeeping, and an inability to adjust postural muscles. Which brain region is most likely affected?

Accepted Answer

Cerebellum

Question 6

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

Accepted Answer

It is formed by tight junctions between endothelial cells of CNS capillaries.

Question 7

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

Accepted Answer

They coordinate voluntary motor movements and inhibit unwanted contractions.

Question 8

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 → subarachnoid space

Question 9

Which of the following is a function of the hypothalamus?

Accepted Answer

Control of hormone production in the pituitary gland

Question 10

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

Accepted Answer

It establishes emotional states and facilitates memory storage and retrieval.

Question 11

A patient has a tumor compressing the corpus callosum. Which of the following symptoms would most likely result?

Accepted Answer

Impaired communication between the right and left cerebral hemispheres

Question 12

Which of the following is TRUE regarding the meninges of the brain?

Accepted Answer

The arachnoid mater is the middle layer and does not dip into the crevices of the brain.

Question 13

Which brain region is primarily responsible for regulating basic life-sustaining functions such as heart rate, blood pressure, and respiration?

Accepted Answer

Medulla oblongata

Question 14

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

Accepted Answer

Establishing personality, planning, and decision-making

Question 15

Which of the following is a function of the cerebellum?

Accepted Answer

Coordination of repetitive body movements and reduction of motor error

Question 16

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

Accepted Answer

The cauda equina consists of lumbar, sacral, and coccygeal spinal nerves extending through the subarachnoid space.

Question 17

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

Accepted Answer

Commissural fibers connect the two cerebral hemispheres, such as the corpus callosum.

Question 18

Which of the following is a correct pairing of a brain region and its primary function?

Accepted Answer

Parietal lobe – processing somatic sensory information

Question 19

Which of the following best describes the role of the medulla oblongata in the autonomic nervous system?

Accepted Answer

It contains centers that regulate heart rate, vessel diameter, and respiratory rhythm.

Question 20

Which of the following is TRUE regarding the flow and reabsorption of cerebrospinal fluid (CSF)?

Accepted Answer

CSF is reabsorbed into the venous sinuses through arachnoid granulations.

The Central Nervous System: Structure, Protection, and Function

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