In which of the following would the rate of impulse conduction be the greatest? A) a nonmyelinated fiber of 10- µm diameter B) a myelinated fiber of 1- µm diameter C) a nonmyelinated fiber of 20- µm diameter D) a myelinated fiber of 10- µm diameter E) the same in all because of the all- or- none principle

Question

Quizplus · Accepted Answer

Myelinated fibers conduct impulses faster than nonmyelinated ones due to saltatory conduction. A larger diameter also increases conduction speed. Thus, a myelinated fiber of 10-µm diameter would have the greatest rate of impulse conduction.

In Which of the Following Would the Rate of Impulse