You Have Been Diagnosed with the Demyelinating Disease Called Multiple

question 142

Multiple Choice

You have been diagnosed with the demyelinating disease called multiple sclerosis. The areas of damage seem to be centered within the spinal cord. The demyelinated areas are most probably within the

• A) ascending and/or descending tracts.
• B) dorsal or ventral horns.
• C) central canal.
• D) dorsal root ganglia.
• E) gray commissure.

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Definitions:

Directions of Motion

The path along which something moves, proceeds, or is directed.

Corpus Callosum

Band of white matter containing about 200 million nerve fibers that connects the two cerebral hemispheres to provide a route for direct communication between them.

Prefrontal Association Cortex

A region of the frontal lobes involved in planning complex cognitive behaviors, personality expression, decision making, and moderating social behavior.

Posterior Parietal Cortex

An area of the brain located at the back of the parietal lobe, involved in integrating sensory information and in the coordination of movements.