Question 1

Which of the following best describes the function of the nervous system's 'integration' process?

Accepted Answer

Processing and interpreting sensory input to determine an appropriate response.

Question 2

A patient suffers a spinal cord injury that disrupts the transmission of impulses from the CNS to skeletal muscles. Which division of the nervous system is most likely affected?

Accepted Answer

Somatic nervous system

Question 3

Which neuroglia are responsible for forming the myelin sheath in the central nervous system (CNS)?

Accepted Answer

Oligodendrocytes

Question 4

A virus that uses retrograde axonal transport to reach the neuron cell body is most likely to affect which of the following processes?

Accepted Answer

Transport of degraded organelles and toxins toward the cell body

Question 5

Which of the following statements about myelination in the peripheral nervous system (PNS) is correct?

Accepted Answer

Schwann cells wrap around axons in a jelly roll fashion to form the myelin sheath.

Question 6

Which type of neuron is most commonly found in the human body and is primarily responsible for integrating information within the CNS?

Accepted Answer

Multipolar neurons

Question 7

A researcher is studying a cell that supports and braces neurons, helps in exchanges between capillaries and neurons, and participates in information processing in the brain. Which neuroglia is being studied?

Accepted Answer

Astrocyte

Question 8

Which of the following best explains why myelinated fibers conduct impulses faster than nonmyelinated fibers?

Accepted Answer

Myelin allows for saltatory conduction, where action potentials jump between nodes of Ranvier.

Question 9

Which of the following is a correct pairing of a neuroglia and its function in the CNS?

Accepted Answer

Microglial cells – act as phagocytes to remove debris and pathogens

Question 10

A patient presents with muscle weakness and loss of coordination. Demyelination is observed in the CNS. Which cell type is most likely affected?

Accepted Answer

Oligodendrocytes

Question 11

Which of the following best describes the difference between a nucleus and a ganglion?

Accepted Answer

A nucleus is a cluster of neuron cell bodies in the CNS, while a ganglion is in the PNS.

Question 12

Which of the following scenarios best illustrates the function of the sensory (afferent) division of the PNS?

Accepted Answer

A person feels pain after touching a hot surface, and the information is sent to the CNS.

Question 13

Which of the following is true regarding the structural classification of neurons?

Accepted Answer

Multipolar neurons have one axon and multiple dendrites.

Question 14

A toxin that specifically damages Schwann cells would most likely result in which of the following?

Accepted Answer

Loss of myelination in the PNS

Question 15

Which of the following best describes the role of dendrites in a neuron?

Accepted Answer

They receive incoming signals and convey them toward the cell body as graded potentials.

Question 16

Which of the following is a correct statement about the autonomic nervous system?

Accepted Answer

It regulates smooth muscle, cardiac muscle, and glands involuntarily.

Question 17

A patient is unable to regenerate damaged peripheral nerve fibers. Which neuroglia is most likely not functioning properly?

Accepted Answer

Schwann cells

Question 18

Which of the following best explains why the CNS has limited ability to regenerate damaged neurons compared to the PNS?

Accepted Answer

Oligodendrocytes do not provide the same regenerative environment as Schwann cells.

Question 19

Which of the following is a function of ependymal cells in the CNS?

Accepted Answer

Circulating cerebrospinal fluid with their cilia

Question 20

Which of the following best describes the difference between a nerve and a tract?

Accepted Answer

A nerve is a bundle of neuron processes in the PNS, while a tract is in the CNS.

Fundamentals of the Nervous System and Nervous Tissue

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