Alexander Disease Is a Type of Leukodystrophy in Which Myelin

question 29

Multiple Choice

Alexander disease is a type of leukodystrophy in which myelin sheaths surrounding axons in the brain are destroyed.What type of cell is affected,and what is the outcome in Alexander disease?

• A)Schwann cells are affected,and action potential propagation is slowed.
• B)Oligodendrocytes are affected,and action potential propagation is slowed.
• C)Schwann cells are affected,and action potential propagation is sped up.
• D)Oligodendrocytes are affected,and action potential propagation is sped up.

---

Definitions:

Mind-Brain Problem

A philosophical and scientific question concerning the relationship between consciousness (mind) and the physical brain, including how mental states are related to brain processes.

Control

The ability to shape or control the actions of others and the direction of events.

Brain

The organ located in the head of an animal that controls its thoughts, memory, feelings, and activity.

Positron-Emission Tomography

A nuclear medicine functional imaging technique used to observe metabolic processes in the body.