Q: Which of the following equations best represents the relationship between nerve impulse speed and myelination?

$$v \propto \text{myelination}$$

Question 1

Which of the following best describes the primary function of the nervous system?

Accepted Answer

To control and communicate throughout the body using electrical and chemical signals

Question 2

Which sequence correctly represents the three overlapping functions of the nervous system?

Accepted Answer

Sensory input → Integration → Motor output

Question 3

A patient touches a hot surface and immediately withdraws their hand. Which function of the nervous system is primarily responsible for the withdrawal?

Accepted Answer

Motor output

Question 4

Which division of the nervous system consists mainly of nerves that extend from the brain and spinal cord?

Accepted Answer

Peripheral nervous system (PNS)

Question 5

What is the main role of the somatic nervous system?

Accepted Answer

Conscious control of skeletal muscles

Question 6

Which of the following is TRUE about the autonomic nervous system?

Accepted Answer

It consists of sympathetic and parasympathetic subdivisions that work in opposition

Question 7

Which neuroglia cell type is most abundant in the CNS and plays a role in supporting neurons and controlling the chemical environment?

Accepted Answer

Astrocytes

Question 8

Which neuroglia cell type is responsible for forming myelin sheaths around CNS nerve fibers?

Accepted Answer

Oligodendrocytes

Question 9

A virus uses retrograde axonal transport to reach the neuron cell body. Which of the following viruses is known to use this mechanism?

Accepted Answer

Rabies virus

Question 10

Which of the following statements about myelinated fibers is correct?

Accepted Answer

They are surrounded by segmented myelin sheaths

Question 11

Which cell type in the PNS is vital to the regeneration of damaged peripheral nerve fibers?

Accepted Answer

Schwann cells

Question 12

Which structural class of neuron is most common in the CNS?

Accepted Answer

Multipolar

Question 13

Which functional class of neuron transmits impulses from sensory receptors toward the CNS?

Accepted Answer

Sensory neurons

Question 14

Which of the following best describes the role of interneurons?

Accepted Answer

Shuttle signals through CNS pathways and are mostly found within the CNS

Question 15

Which of the following is a correct description of the axon hillock?

Accepted Answer

The cone-shaped area where the axon originates from the cell body

Question 16

Which process is responsible for moving mitochondria and enzymes away from the neuron cell body?

Accepted Answer

Anterograde transport

Question 17

Which of the following equations best represents the relationship between nerve impulse speed and myelination?

Accepted Answer

$$v \propto 	ext{myelination}$$

Question 18

Which of the following is NOT a function of astrocytes?

Accepted Answer

Forming myelin sheaths in the CNS

Question 19

Which of the following best explains why neurons have a high metabolic rate?

Accepted Answer

They require continuous supply of oxygen and glucose for impulse transmission

Question 20

Which of the following is TRUE regarding the location of neuron cell bodies?

Accepted Answer

Clusters of neuron cell bodies in the CNS are called nuclei

Fundamentals of the Nervous System and Nervous Tissue: Chapter 11 Part A Study Notes

Study Guide - Practice Questions

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