Question 1

Which of the following best describes the primary function of the thalamus in the diencephalon?

Accepted Answer

It relays and processes sensory information to the cerebrum, acting as a 'gatekeeper' for sensory input.

Question 2

A patient presents with loss of coordination and difficulty with timekeeping and impulse control. Which brain region is most likely affected?

Accepted Answer

Cerebellum

Question 3

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

Accepted Answer

Astrocytes help control the permeability of the BBB by influencing endothelial cells.

Question 4

Which of the following is NOT a function of cerebrospinal fluid (CSF)?

Accepted Answer

Generating action potentials in neurons

Question 5

A patient has a subdural hematoma. Between which two layers of the cranial meninges has the bleeding occurred?

Accepted Answer

Between the dura mater and arachnoid mater

Question 6

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

Accepted Answer

To increase the surface area for neural processing

Question 7

A stroke affecting the precentral gyrus of the left cerebral hemisphere would most likely result in:

Accepted Answer

Loss of voluntary motor control on the right side of the body

Question 8

Which of the following structures is responsible for connecting the two cerebral hemispheres?

Accepted Answer

Corpus callosum

Question 9

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

Accepted Answer

Difficulty producing coherent speech

Question 10

Which of the following best describes the function of the medulla oblongata?

Accepted Answer

It relays sensory information to the cerebrum and controls basic autonomic functions such as heart rate and respiration.

Question 11

Which of the following is a correct pathway for cerebrospinal fluid (CSF) flow?

Accepted Answer

Lateral ventricles → third ventricle → cerebral aqueduct → fourth ventricle → subarachnoid space

Question 12

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

Accepted Answer

It establishes emotional states and facilitates memory storage and retrieval.

Question 13

A patient is unable to distinguish between different tastes and smells. Which cortical areas are most likely affected?

Accepted Answer

Orbitofrontal cortex and insula

Question 14

Which of the following statements about the spinal cord is correct?

Accepted Answer

The anterior horn of the spinal cord gray matter controls somatic motor functions.

Question 15

Which of the following is a function of the hypothalamus?

Accepted Answer

Controlling hormone production in the pituitary gland

Question 16

Which of the following best explains why a drug that is water-soluble may have difficulty entering the brain tissue?

Accepted Answer

The blood-brain barrier restricts passage of water-soluble compounds unless specific channels or transporters are present.

Question 17

Which of the following is true regarding the organization of white matter in the cerebrum?

Accepted Answer

Commissural fibers connect the two cerebral hemispheres.

Question 18

A patient with a lesion in the right postcentral gyrus would most likely experience:

Accepted Answer

Loss of somatic sensory perception on the left side of the body

Question 19

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

Accepted Answer

They are involved in the regulation of voluntary motor control and procedural learning.

Question 20

A patient is unable to maintain posture and has difficulty with repetitive body movements. Which brain structure is most likely damaged?

Accepted Answer

Cerebellum

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

Study Guide - Practice Questions