Why does an action potential travel faster in a myelinated neurone compared to a non-myelinated neurone?

Myelinated and non-myelinated neurones have different structures which is why the speed of action potentials differ. In a Myelinated neurone, a myelin sheath is wrapped around the axon. This myelin sheath is made up of fat containing cells called Schwann cells that cannot conduct electricity. In-between the myelin sheath there are gaps called the nodes of Ranvier which can conduct electricity. An action potential along a myelinated neurone cannot pass through the myelin (as no electricity can be conducted there) so therefore 'jumps' from node to node by saltatory conduction. Whereas, in a non-myelinated neurone there is no myelin so the action potential has to travel along the whole of the axon. Therefore, the action potential travels faster in the myelinated neurone as the distance it needs to travel along the axon is much less than the distance it travels along a non-myelinated neurone.