The degradation of which of the following may cause neuronal disruption by slowing the nerve impulses as they travel through the nervous system, which may help to explain middle age-related declines in cognition and motor control?

Question

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Myelin is a fatty substance that surrounds and insulates nerve fibers, facilitating the rapid transmission of electrical impulses along the nervous system. Degradation of myelin can slow down nerve impulses, leading to cognitive and motor control declines.

The Degradation of Which of the Following May Cause Neuronal