Question 1

Which of the following best describes the main function of the nervous tissue in the human body?

Accepted Answer

To control and communicate information rapidly throughout the body

Question 2

A patient suffers a spinal cord injury that disrupts the transmission of impulses from the skin to the CNS. Which type of nerve fibers is most likely affected?

Accepted Answer

Somatic sensory fibers

Question 3

Which neuroglial cell in the CNS is primarily responsible for forming myelin sheaths around axons?

Accepted Answer

Oligodendrocytes

Question 4

A researcher observes cells in the CNS that are highly branched and cling to neurons, synaptic endings, and capillaries. What is the most likely identity of these cells?

Accepted Answer

Astrocytes

Question 5

Which of the following is TRUE regarding the myelin sheath in the peripheral nervous system (PNS)?

Accepted Answer

It is produced by Schwann cells, with each cell forming one segment

Question 6

Which equation best represents the relationship between the speed of nerve impulse conduction ($$v) $$and the presence of myelin sheath?

Accepted Answer

$$v_{myelinated} \u003e v_{nonmyelinated}$$

Question 7

A patient presents with loss of motor function but intact sensory perception. Which type of neuron is most likely damaged?

Accepted Answer

Motor neurons

Question 8

Which of the following best describes the structural classification of a neuron with one axon and two or more dendrites?

Accepted Answer

Multipolar

Question 9

Which neuroglial cell type is responsible for circulating cerebrospinal fluid (CSF) in the CNS?

Accepted Answer

Ependymal cells

Question 10

If a neuron is described as 'amitotic,' what does this imply about its ability to regenerate after injury?

Accepted Answer

It cannot divide, so regeneration is limited

Question 11

Which of the following is a correct sequence for the three main functions of the nervous system?

Accepted Answer

Sensory input $$\rightarrow$$ Integration $$\rightarrow$$ Motor output

Question 12

Which of the following statements about the autonomic nervous system is correct?

Accepted Answer

It is responsible for involuntary control of organs and glands

Question 13

A neuron receives signals from other neurons at synapses located on which part of its structure?

Accepted Answer

Cell body and dendrites

Question 14

Which of the following is TRUE about the difference between white matter and gray matter in the CNS?

Accepted Answer

White matter contains myelinated fibers (axons)

Question 15

Which equation best represents the relationship between the number of axons myelinated by a single oligodendrocyte ($$n_{axons}) in $$the CNS?

Accepted Answer

$$n_{axons} \leq 60$$

Question 16

Which type of neuron is most abundant in the human body and is the major neuron type in the CNS?

Accepted Answer

Multipolar neuron

Question 17

A patient with multiple sclerosis experiences slowed nerve impulse conduction. Which structure is most likely damaged?

Accepted Answer

Myelin sheath

Question 18

Which of the following best describes the function of microglial cells in the CNS?

Accepted Answer

Phagocytose microorganisms and debris

Question 19

Which equation correctly represents the number of processes in a bipolar neuron ($$n_{processes}$$)?

Accepted Answer

$$n_{processes} = 2$$

Question 20

Which of the following is a correct pairing of neuron type and its primary function?

Accepted Answer

Interneuron: integrates sensory and motor information within CNS

Nervous System & Nervous Tissue: Organization, Cells, and Structure (Chapter 11 Study Notes)

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