Describe5 marksChallenge
A student is investigating the effect of myelination on the speed of nerve impulse conduction using two types of neurones isolated from a frog: one sensory neurone that is myelinated and one that is unmyelinated. Both neurones are of similar diameter and are stimulated at the same temperature. The student records the time taken for an impulse to travel a fixed distance along each neurone. The myelinated neurone conducts the impulse much faster than the unmyelinated one. Describe how saltatory conduction speeds impulse transmission in a myelinated neurone.