In Multiple Sclerosis the Myelin Sheaths Around the Axons of the Brain

question 97

Multiple Choice

In multiple sclerosis the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results. How does this disease manifest at the level of the action potential?
I. Action potentials move in the opposite direction on the axon.
II. Action potentials move more slowly along the axon.
III. No action potentials are transmitted.

• A) only I
• B) only II
• C) only III
• D) only II and III
• E) only I and II

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Definitions:

Stacked Bar Chart

A graphical representation of data where bars divided into sub-parts represent the whole and its segments.

Relative Frequency

The proportion of times a value occurs in relation to the total number of outcomes, often expressed as a percentage.

Categorical Variables

Variables that represent types or categories, where the data can be divided into groups with no inherent numerical ordering.

Percent Frequency

The percentage of times a specific value or range of values occurs within a dataset.