Compare the propagation speeds of an action potential along

Compare the propagation speeds of an action potential along an axon that is 10 µM in diameter and one that is 20 µM in diameter. For full credit you must have a quantitative answer.

Solution

Explanation : Thumb rule is larger the diameter of axon faster the speed of action potential. This because more diameter means larger membrane surface more ion channels greater myelination. Thus axon with 20um diameter has faster of action potential than 10um diameter axon.