The median giant fiber (MGF) of the earthworm has a diameter of up to 0.07 mm. The average diameter of a sciatic nerve is 16 to 20 mm. Earthworm neurons are actually myelinated but their myelin is much thinner than most human nerves, especially the sciatic nerve .
Dr. Fu hypothesis that human sciatic never will have a higher conduction velocity than earthworms' MGF. Dr. Fu made her hypothesis based on which factor(s) that she extracted from information above?
membrane capacitance of the nerves and diameter of the nerves