An unmyelinated fiber with a large diameter can conduct action potentials more rapidly than an unmyelinated fiber with a smaller diameter.

Question

Quizplus · Accepted Answer

A larger diameter of the axon allows for a larger surface area for ion exchange during an action potential, leading to faster conduction of the electrical signal. Myelin, which acts as an insulator, also speeds up conduction, but the question specifically refers to unmyelinated fibers.

An Unmyelinated Fiber with a Large Diameter Can Conduct Action