OSMT (Ontario Society of Medical Technologists) Practice Exam

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Multiple Sclerosis occurs when:

a. axons do not reach threshold level
b. dendrites cannot receive impulses
c. myelin sheaths are destroyed
d. the cellular sheaths are destroyed

The correct answer is: c. myelin sheaths are destroyed

Multiple sclerosis occurs when the myelin sheaths, which are protective covering surrounding the nerves, are destroyed. This destruction leads to disruptions in the transmission of nerve signals, affecting the communication between the brain and the rest of the body. Options A, B, and D do not accurately describe the pathology of multiple sclerosis, making them incorrect choices.