Q: Which equation best represents the rate of cerebrospinal fluid (CSF) formation if the total CSF volume is $$150\ \mathrm{mL}$$ and it is replaced every $$8$$ hours?

$$\text{Rate} = \frac{150\ \mathrm{mL}}{8\ \mathrm{hr}} = 18.75\ \mathrm{mL/hr}$$

Question 1

Which of the following correctly lists the four main regions of the brain?

Accepted Answer

Cerebrum, diencephalon, cerebellum, brainstem

Question 2

A patient presents with difficulty initiating voluntary movements and displays involuntary tremors. Which brain structure is most likely affected?

Accepted Answer

Basal nuclei

Question 3

Which of the following best describes the difference between white matter and gray matter in the CNS?

Accepted Answer

White matter consists mainly of myelinated axons, while gray matter contains neuron cell bodies and unmyelinated fibers.

Question 4

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

Accepted Answer

Occipital lobe

Question 5

A stroke patient is unable to speak fluently but can understand language. Which area of the brain is most likely damaged?

Accepted Answer

Broca's area

Question 6

Which of the following best describes the arrangement of the meninges from outermost to innermost?

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 7

Which of the following is a function of the cerebellum?

Accepted Answer

Coordination of voluntary movements and balance

Question 8

Which structure connects the third and fourth ventricles of the brain?

Accepted Answer

Cerebral aqueduct

Question 9

A patient with hydrocephaly is most likely experiencing which of the following?

Accepted Answer

Excess accumulation of cerebrospinal fluid in the ventricles

Question 10

Which of the following is NOT a component of the diencephalon?

Accepted Answer

Pons

Question 11

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

Accepted Answer

Commissural fibers

Question 12

Which region of the brain is primarily involved in emotional processing and memory formation?

Accepted Answer

Limbic system

Question 13

Which of the following best describes the function of the blood-brain barrier (BBB)?

Accepted Answer

It selectively restricts the passage of substances from the blood into the CNS.

Question 14

A patient with damage to the reticular activating system (RAS) would most likely experience which symptom?

Accepted Answer

Impaired consciousness or coma

Question 15

Which of the following correctly matches the horn of the spinal cord with the type of neuron it contains?

Accepted Answer

Dorsal horn: sensory neurons

Question 16

Which of the following is a real-life consequence of a lesion in the cerebellum?

Accepted Answer

Ataxia, resulting in uncoordinated movements and balance problems

Question 17

Which space within the meninges contains cerebrospinal fluid?

Accepted Answer

Subarachnoid space

Question 18

Which equation best represents the rate of cerebrospinal fluid (CSF) formation if the total CSF volume is $$150\ \mathrm{mL}$$ and it is replaced every $$8$$ hours?

Accepted Answer

$$	ext{Rate} = \frac{150\ \mathrm{mL}}{8\ \mathrm{hr}} = 18.75\ \mathrm{mL/hr}$$

Question 19

Which of the following structures marks the end of the spinal cord?

Accepted Answer

Conus medullaris

Question 20

A patient with seasonal affective disorder (SAD) is most likely experiencing dysfunction in which brain region?

Accepted Answer

Epithalamus (pineal gland)

Central Nervous System: Structure and Function (BIOL 236, Chapter 12 Study Guide)

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