Question 1

Which of the following structures is NOT considered part of the central nervous system (CNS)?

Accepted Answer

Dorsal root ganglion

Question 2

Cephalization refers to which evolutionary development in the nervous system?

Accepted Answer

Development of the rostral (anterior) portion of the CNS

Question 3

Which brain region is responsible for conscious awareness, voluntary motor initiation, and memory storage?

Accepted Answer

Cerebral cortex

Question 4

A patient suffers a stroke affecting the left primary motor cortex. Which of the following symptoms is most likely?

Accepted Answer

Paralysis of muscles on the right side of the body

Question 5

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

Accepted Answer

Occipital lobe

Question 6

The central sulcus separates which two gyri?

Accepted Answer

Precentral gyrus and postcentral gyrus

Question 7

Which of the following statements about the distribution of gray and white matter in the CNS is correct?

Accepted Answer

Gray matter forms the cortex of the cerebrum and cerebellum

Question 8

Which type of fiber in cerebral white matter connects the two hemispheres?

Accepted Answer

Commissural fibers

Question 9

Damage to Broca's area in the frontal lobe would most likely result in which deficit?

Accepted Answer

Impaired motor speech production

Question 10

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

Accepted Answer

Influence muscle movements and filter inappropriate responses

Question 11

A lesion in the posterior association area of the cerebral cortex may result in which clinical symptom?

Accepted Answer

Loss of awareness of self in space

Question 12

Which equation best represents the percentage of brain mass accounted for by the cerebral cortex?

Accepted Answer

$$40\%$$

Question 13

Which ventricle is directly connected to the third ventricle via the interventricular foramen?

Accepted Answer

Lateral ventricle

Question 14

Which area of the cerebral cortex is responsible for integrating diverse information and giving meaning to sensory input?

Accepted Answer

Association areas

Question 15

Which of the following is TRUE regarding lateralization of cortical function?

Accepted Answer

Cerebral dominance refers to the hemisphere dominant for language

Question 16

A patient with damage to the primary visual cortex can:

Accepted Answer

Experience functional blindness

Question 17

Which of the following correctly matches the fiber type with its function in cerebral white matter?

Accepted Answer

Commissural fibers: connect gray matter of two hemispheres

Question 18

Which area of the cerebral cortex is involved in conscious perception of visceral sensations such as a full bladder?

Accepted Answer

Visceral sensory area

Question 19

Which of the following is a function of the limbic association area?

Accepted Answer

Provides emotional impact that helps establish memories

Question 20

If the somatosensory homunculus is mapped, which body region would have the largest representation?

Accepted Answer

Face

Divisions and Organization of the Central Nervous System: Structure and Function of the Brain and Spinal Cord

Study Guide - Practice Questions