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:

Standard Deviation

A measure that quantifies the amount of variation or dispersion of a set of data values from their mean.

Sampling Distribution

The probability distribution of a statistic based on a random sample.

Freshman Class

A group of students who are in their first year at a secondary or post-secondary educational institution.

Sampling Distribution

The probability dispersion of a particular statistic, facilitated by a randomly selected sample.