What would be the best explanation for why myelinated fibers conduct signals faster than unmyelinated fibers?
A. There are no internodes in unmyelinated fibers.
B. Facilitated diffusion of sodium and potassium is faster in myelinated fibers.
C. There are more internodes in unmyelinated fibers.
D. Diffusion of ions along the axoplasm is faster.
E. Active transport of sodium and potassium is faster in myelinated fibers.
Answer: D
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