Question 1

Which of the following best describes the function of the meninges in the central nervous system (CNS)?

Accepted Answer

They act as a protective covering for the brain and spinal cord, provide structural support, and contain cerebrospinal fluid within their spaces.

Question 2

Which of the following structures is NOT part of the ventricular system of the brain?

Accepted Answer

Corpus callosum

Question 3

The blood-brain barrier is primarily formed by which of the following cellular structures?

Accepted Answer

Astrocyte end-feet and tight junctions between endothelial cells

Question 4

Which molecule is LEAST likely to cross the blood-brain barrier under normal physiological conditions?

Accepted Answer

Large plasma proteins

Question 5

A patient suffers a stroke that damages the left precentral gyrus. Which function is most likely to be impaired?

Accepted Answer

Motor control of the right side of the body

Question 6

Which of the following best explains the role of the choroid plexus in the CNS?

Accepted Answer

It produces cerebrospinal fluid (CSF) by filtering blood plasma.

Question 7

Which equation correctly represents the calculation of cerebral perfusion pressure (CPP)?

Accepted Answer

$$CPP = MAP - ICP$$

Question 8

Which brain region is primarily responsible for regulating autonomic functions such as heart rate and respiration?

Accepted Answer

Medulla oblongata

Question 9

Damage to the dorsal roots of the spinal cord would most likely result in which clinical symptom?

Accepted Answer

Loss of sensory perception

Question 10

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

Accepted Answer

Gray matter contains neuron cell bodies, while white matter contains myelinated axons.

Question 11

Which of the following best describes the function of the corpus callosum?

Accepted Answer

It connects the two cerebral hemispheres and facilitates interhemispheric communication.

Question 12

Which process is most directly involved in the formation of long-term potentiation (LTP) in neural circuits?

Accepted Answer

Strengthening of synaptic connections through repeated stimulation

Question 13

A patient presents with flaccid paralysis after a spinal cord injury. Which type of spinal cord damage is most likely responsible?

Accepted Answer

Damage to lower motor neurons in the anterior horn of the spinal cord

Question 14

Which of the following best describes spinal shock?

Accepted Answer

A temporary loss of all reflex activity below the level of spinal cord injury

Question 15

Which of the following is a function of the ascending tracts in the spinal cord?

Accepted Answer

Transmit sensory information from the body to the brain

Question 16

Which brain structure is involved in the relay of sensory information to the cerebral cortex?

Accepted Answer

Thalamus

Question 17

Which of the following best explains the difference between paraplegia and quadriplegia?

Accepted Answer

Paraplegia involves paralysis of the lower limbs, while quadriplegia involves paralysis of all four limbs.

Question 18

Which of the following is a key function of the reticular formation in the brainstem?

Accepted Answer

Regulation of consciousness and arousal

Question 19

Which of the following best describes the role of the lateral ventricles in the brain?

Accepted Answer

They produce and circulate cerebrospinal fluid throughout the CNS.

Question 20

Which of the following is a plausible consequence of a break in the blood-brain barrier?

Accepted Answer

Increased risk of infection and exposure of neural tissue to toxins

The Central Nervous System: Structure, Function, and Integration (Chapter 12 Study Guide)

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