Question 1

Which of the following best describes the primary function of the thalamus in the central nervous system?

Accepted Answer

It acts as the main entrance for sensory information to the cerebral cortex, processing and relaying most sensory input except olfaction.

Question 2

A patient presents with an inability to produce speech, but can understand language. Which brain area is most likely damaged?

Accepted Answer

Broca's area

Question 3

Which structure is responsible for the majority of conscious processes such as learning, memory, and personality?

Accepted Answer

Cerebral cortex (neocortex)

Question 4

Which of the following is TRUE regarding the blood brain barrier?

Accepted Answer

It is formed by tight junctions between endothelial cells of brain capillaries, limiting passage of large, polar molecules.

Question 5

A patient with damage to the right parietal association cortex is most likely to experience which of the following symptoms?

Accepted Answer

Neglect of the left side of their visual field or body

Question 6

Which of the following best explains why fever occurs during infection?

Accepted Answer

Pyrogens interact with the hypothalamus, raising the set point for body temperature.

Question 7

Which pathway correctly describes the flow of cerebrospinal fluid (CSF) from its formation to reabsorption?

Accepted Answer

Choroid plexus → lateral ventricles → third ventricle → fourth ventricle → subarachnoid space → arachnoid granulations → dural sinuses

Question 8

Which of the following is a function of the hypothalamus?

Accepted Answer

Regulating the autonomic nervous system and endocrine system

Question 9

A patient with damage to the basal nuclei may experience which of the following symptoms?

Accepted Answer

Involuntary movements and difficulty initiating voluntary movements

Question 10

Which of the following best describes the role of the cerebellum?

Accepted Answer

Coordinates ongoing voluntary movement to reduce motor error

Question 11

Which brain structure is primarily responsible for arousing the cerebral cortex from sleep and maintaining wakefulness?

Accepted Answer

Reticular activating system (RAS)

Question 12

Which of the following is a correct statement about the organization of white and gray matter in the brain and spinal cord?

Accepted Answer

In the spinal cord, gray matter is internal and white matter is superficial.

Question 13

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

Accepted Answer

Participation in memory, learning, emotion, and behavior

Question 14

Which of the following is a plausible consequence of a blocked cerebral aqueduct?

Accepted Answer

Hydrocephalus due to accumulation of cerebrospinal fluid

Question 15

Which of the following best explains why antihistamines can cause drowsiness?

Accepted Answer

They block histamine neurotransmission in the reticular formation, reducing cortical activation.

Question 16

Which of the following is a function of the arachnoid granulations (villi)?

Accepted Answer

Returning cerebrospinal fluid to the bloodstream via the dural sinuses

Question 17

Which of the following best describes the effect of damage to the reticular formation?

Accepted Answer

Coma or altered states of consciousness

Question 18

Which of the following is TRUE regarding the process of long-term potentiation (LTP) in memory formation?

Accepted Answer

LTP increases the strength of synaptic connections, promoting long-term memory storage.

Question 19

Which of the following is a function of the prefrontal cortex?

Accepted Answer

Integrating complex sensory and motor information to create awareness of self and execute morally appropriate behaviors

Question 20

Which of the following best describes the role of the pineal gland?

Accepted Answer

Secretes melatonin to help regulate the sleep/wake cycle

The Central Nervous System: Structure, Function, and Protection

Study Guide - Practice Questions