Question 1

Which of the following brain regions is primarily responsible for coordinating voluntary movement and maintaining posture and balance?

Accepted Answer

Cerebellum

Question 2

A patient suffers a stroke that damages the left precentral gyrus. Which of the following is the most likely result?

Accepted Answer

Loss of voluntary movement on the right side of the body

Question 3

Which of the following best describes the function of the blood-brain barrier?

Accepted Answer

It selectively restricts the passage of substances from the blood into the brain tissue.

Question 4

Which lobe of the cerebral cortex is primarily responsible for processing auditory information?

Accepted Answer

Temporal lobe

Question 5

Which of the following statements best explains the difference between ascending and descending tracts in the spinal cord?

Accepted Answer

Ascending tracts carry sensory information to the brain, while descending tracts carry motor commands from the brain.

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

Difficulty producing spoken language

Question 8

Which of the following is a function of cerebrospinal fluid (CSF)?

Accepted Answer

It cushions the brain and spinal cord, providing mechanical protection.

Question 9

Which of the following best describes the process of decussation in the central nervous system?

Accepted Answer

The crossing over of nerve fibers from one side of the CNS to the other

Question 10

Which structure is responsible for relaying sensory information to the appropriate area of the cerebral cortex?

Accepted Answer

Thalamus

Question 11

Which of the following best explains why an injury to the right side of the brain may result in loss of sensation on the left side of the body?

Accepted Answer

Sensory pathways decussate, or cross over, to the opposite side of the CNS.

Question 12

Which of the following is a key difference between the nervous system and the endocrine system in maintaining homeostasis?

Accepted Answer

The nervous system acts rapidly via electrical signals, while the endocrine system acts more slowly via hormones.

Question 13

Which of the following best describes the location of gray and white matter in the spinal cord?

Accepted Answer

Gray matter is located centrally, surrounded by white matter.

Question 14

Which of the following is the correct order of neurons in a typical sensory pathway from the periphery to the cerebral cortex?

Accepted Answer

First-order neuron → second-order neuron → third-order neuron

Question 15

Which of the following brain regions is NOT derived from the embryonic diencephalon?

Accepted Answer

Cerebellum

Question 16

A patient is unable to initiate voluntary movements but can still perform reflex actions. Which area of the CNS is most likely damaged?

Accepted Answer

Primary motor cortex

Question 17

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

Accepted Answer

It is involved in emotion, memory, and motivation.

Question 18

Which of the following best describes the pathway from the decision to move to the execution and monitoring of a motor program?

Accepted Answer

Cerebral cortex initiates movement, basal nuclei and cerebellum refine and monitor the movement.

Question 19

Which of the following is a function of the cranial meninges?

Accepted Answer

They protect the brain and enclose the cerebrospinal fluid.

Question 20

Which of the following best explains how the CNS processes special sensory stimuli such as vision or hearing?

Accepted Answer

Special sensory stimuli are relayed to specific regions of the cerebral cortex for interpretation.

Chapter 12: The Central Nervous System – Study Notes

Study Guide - Practice Questions