Question 1

Which of the following best describes the primary function of the thalamus in the central nervous system?

Accepted Answer

It acts as the main relay station for nearly all sensory information destined for the cerebral cortex.

Question 2

A patient presents with an inability to initiate voluntary movement and displays a shuffling gait with minimal facial expression. Which brain structure is most likely affected?

Accepted Answer

Basal nuclei, particularly due to degeneration of the substantia nigra.

Question 3

Which lobe of the cerebrum is primarily responsible for processing visual information?

Accepted Answer

Occipital lobe

Question 4

During a lumbar puncture, cerebrospinal fluid (CSF) is typically withdrawn from which space?

Accepted Answer

Subarachnoid space

Question 5

Which of the following best explains why the brain requires about 20% of the body's total blood flow at rest?

Accepted Answer

The brain has high metabolic demands for oxygen and glucose to support its functions.

Question 6

A patient with damage to Broca’s area would most likely exhibit which of the following symptoms?

Accepted Answer

Difficulty producing speech with intact comprehension.

Question 7

Which of the following structures is responsible for the coordination and planning of complex movements, such as playing a musical instrument?

Accepted Answer

Cerebellum

Question 8

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

Accepted Answer

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

Question 9

Which pathway correctly describes the flow of cerebrospinal fluid (CSF) from its formation to reabsorption?

Accepted Answer

Choroid plexus → ventricles → subarachnoid space → arachnoid granulations → dural sinuses

Question 10

A patient is unable to understand spoken or written language but can speak fluently, although their speech lacks meaning. Which area of the brain is most likely damaged?

Accepted Answer

Wernicke’s area

Question 11

Which of the following best describes the function of the reticular formation?

Accepted Answer

Regulation of sleep, pain transmission, mood, and consciousness

Question 12

Which of the following is a correct statement about the organization of gray and white matter in the brain and spinal cord?

Accepted Answer

In the brain, gray matter is superficial and white matter is deep; in the spinal cord, white matter is superficial and gray matter is deep.

Question 13

Which of the following best explains the phenomenon of phantom limb pain?

Accepted Answer

The sensory map in the primary somatosensory cortex (S1) persists even after the limb is removed.

Question 14

Which of the following is a function of the hypothalamus?

Accepted Answer

Regulation of body temperature, hunger, and the autonomic nervous system

Question 15

A patient with damage to the right parietal association cortex is most likely to experience which of the following deficits?

Accepted Answer

Impaired spatial awareness and attention

Question 16

Which of the following best describes the role of the cerebellum in motor learning?

Accepted Answer

It detects motor error and modifies motor programs to improve movement accuracy over time.

Question 17

Which of the following is a real-world example of the placebo effect in pain perception?

Accepted Answer

A patient reports pain relief after receiving a sugar pill, due to the brain's modulation of pain perception.

Question 18

Which of the following best describes the function of the corpus callosum?

Accepted Answer

It connects the right and left cerebral hemispheres, allowing communication between them.

Question 19

Which of the following best explains why damage to the medulla oblongata can be life-threatening?

Accepted Answer

It contains vital centers that regulate heart rate, breathing, and blood pressure.

Study Guide: The Central Nervous System (CNS) – Structure, Function, and Protection

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