Question 1

Which structure is responsible for conscious control of skeletal muscle movement in the brain?

Accepted Answer

Primary motor cortex

Question 2

The homunculus map in the precentral gyrus represents which of the following?

Accepted Answer

Distribution of motor output to the body

Question 3

Which of the following best describes the flow of sensory information in the cerebral cortex?

Accepted Answer

Sensory receptors → primary sensory cortex → sensory association cortex → multimodal association cortex

Question 4

Which brain region is most active during visual processing, as shown in functional imaging studies?

Accepted Answer

Occipital lobe

Question 5

If a patient suffers damage to the Broca's area, which function is most likely to be impaired?

Accepted Answer

Speech production

Question 6

Which of the following is TRUE regarding the anatomical relationship between the primary somatosensory cortex and the primary motor cortex?

Accepted Answer

They are located adjacent to each other to facilitate rapid integration of sensory input and motor output.

Question 7

Which of the following best describes the composition of gray matter in the CNS?

Accepted Answer

Neuron cell bodies

Question 8

Which structure connects the left and right cerebral hemispheres, allowing communication between them?

Accepted Answer

Corpus callosum

Question 9

Which of the following is a function of the thalamus?

Accepted Answer

Relay sensory information to the cerebral cortex

Question 10

Which brain structure is NOT part of the central nervous system?

Accepted Answer

Pituitary gland

Question 11

Which of the following best explains why the cortex is highly folded?

Accepted Answer

To increase surface area for more neurons

Question 12

Which EEG wave pattern is most commonly associated with deep sleep?

Accepted Answer

Delta waves

Question 13

Which of the following is TRUE about the organization of the primary motor and somatosensory cortices?

Accepted Answer

Both are organized topographically, with specific regions corresponding to specific body parts.

Question 14

Which area of the brain is primarily responsible for equilibrium and balance?

Accepted Answer

Vestibular cortex

Question 15

Which of the following is a plausible consequence of damage to the limbic association area?

Accepted Answer

Altered emotional responses

Question 16

Which equation best represents the relationship between the number of gyri and the surface area of the cerebral cortex?

Accepted Answer

$$A = n 	imes a_{gyrus}$$

Question 17

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

Accepted Answer

They are filled with cerebrospinal fluid and help protect the brain.

Question 18

Which of the following best describes the function of the multimodal association cortex?

Accepted Answer

Integrates information from multiple sensory modalities for complex processing

Question 19

Which of the following is most likely to occur if the cerebral aqueduct is blocked?

Accepted Answer

Hydrocephalus due to accumulation of cerebrospinal fluid

Question 20

Which of the following best explains why humans rely more on vision than hearing for survival?

Accepted Answer

There is more neural tissue dedicated to the visual cortex than the auditory cortex.

Chapter 12 - The Central Nervous System: Structure and Function

Study Guide - Practice Questions