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Neurobiologists have never questioned that axon malfunction

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Neurobiologists have never questioned that axon malfunction [#permalink] New post 01 Jun 2017, 08:18
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Neurobiologists have never questioned that axon malfunction plays a role in neurological disorders, but the nature of the relationship has been a matter of speculation. George Bartzokis’s neurological research at UCLA suggests that many previously poorly understood disorders such as Alzheimer’s disease may be explained by examining the role of the chemical compound myelin.

Myelin is produced by oligodendrocyte cells as a protective sheathing for axons within the nervous system. As humans mature and their neurochemistries grow more complex, oligodendrocyte cells produce increasing amounts of myelin to protect the Byzantine circuitry inside our nervous systems. An apt comparison may be to the plastic insulation around copper wires. Bereft of myelin, certain areas of the brain may be left vulnerable to short circuiting, resulting in such disorders as ADHD, schizophrenia, and autism.
Consider each of the choices separately and select all that apply.


It can be inferred from the passage that the author would be most likely to agree with which of the following statements regarding the role of myelin?

❑ The levels of myelin in the brain can contribute to the neurological health of individuals.

❑ Increasing the levels of myelin in the brain can reverse the effects of neurological damage.

❑ The levels of myelin in the brain are not fixed throughout the lifetime of an individual.

[Reveal] Spoiler: OA
A and C


In the context in which it appears, byzantine most nearly means

A) devious
B) intricate
C) mature
D) beautiful
E) electronic

[Reveal] Spoiler: OA
B


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Neurobiologists have never questioned that axon malfunction   [#permalink] 01 Jun 2017, 08:18
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Neurobiologists have never questioned that axon malfunction

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