In which of the following would the rate of impulse conduction be the greatest?
A)a myelinated fiber of 10-µm diameter
B)a nonmyelinated fiber of 20-µm diameter
C)a myelinated fiber of 1-µm diameter
D)a nonmyelinated 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, making a myelinated fiber of 10-µm diameter the fastest among the options.

In Which of the Following Would the Rate of Impulse