Question 1

Which of the following best describes the difference between gray matter and white matter in the central nervous system?

Accepted Answer

Gray matter consists mainly of neuron cell bodies and dendrites, while white matter consists mainly of myelinated axons.

Question 2

Which meningeal layer is directly adjacent to the surface of the brain and follows its contours into the gyri and sulci?

Accepted Answer

Pia mater

Question 3

A patient presents with loss of hearing and balance. Which cranial nerve is most likely affected?

Accepted Answer

Vestibulocochlear nerve (VIII)

Question 4

Which structure is responsible for communication between the right and left cerebral hemispheres?

Accepted Answer

Corpus callosum

Question 5

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

Accepted Answer

Occipital lobe

Question 6

A lesion in the precentral gyrus would most likely affect which function?

Accepted Answer

Motor control of voluntary movements

Question 7

Which of the following best describes the function of the hypothalamus?

Accepted Answer

Regulates homeostasis and controls the autonomic nervous system

Question 8

Which cranial nerve is responsible for motor control of most of the eye muscles and pupillary constriction?

Accepted Answer

Oculomotor nerve (III)

Question 9

A patient has difficulty swallowing and a loss of taste sensation in the posterior third of the tongue. Which cranial nerve is most likely involved?

Accepted Answer

Glossopharyngeal nerve (IX)

Question 10

Which of the following is a function of the cerebellum?

Accepted Answer

Coordinating motor commands with sensory feedback for balance and posture

Question 11

Which of the following best describes the function of the thalamus?

Accepted Answer

Relays and processes sensory information (except olfaction) to the cerebral cortex

Question 12

Which cranial nerve is the only one to extend beyond the head and neck to innervate thoracic and abdominal organs?

Accepted Answer

Vagus nerve (X)

Question 13

Which of the following structures is NOT part of the brain stem?

Accepted Answer

Cerebellum

Question 14

Which of the following best describes a gyrus?

Accepted Answer

A ridge or raised portion of the cerebral cortex

Question 15

Which of the following is the correct order of the meningeal layers from superficial to deep?

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 16

A patient is unable to move their tongue properly. Which cranial nerve is most likely damaged?

Accepted Answer

Hypoglossal nerve (XII)

Question 17

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

Accepted Answer

Comparing cortical processing with the general state of activity to influence movement

Question 18

Which cranial nerve is responsible for cutaneous sensations of the face and controlling the muscles of mastication?

Accepted Answer

Trigeminal nerve (V)

Question 19

Which of the following is a function of the insular lobe?

Accepted Answer

Motor control, homeostasis, and self-awareness

Question 20

Which of the following best describes the subarachnoid space?

Accepted Answer

A space filled with cerebrospinal fluid between the arachnoid mater and pia mater

Central Nervous System: Brain Structure, Function, and Cranial Nerves

Study Guide - Practice Questions