1) How are action potentials (AP) generated and propagated down the axon of a nerve? You may include one diagram, but the bulk of the answer must be in paragraph form using your own words

1) How are action potentials (AP) generated and propagated down the axon of a nerve? You may include one diagram, but the bulk of the answer must be in paragraph form using your own words. 

2. What is the effect of myelination on nerve conduction velocity? 

3. In myelinated nerves, why must there be periodic breaks (i.e., the nodes of Ranvier) in the myelin sheath? 

4. Jane was diagnosed with multiple sclerosis, a disease of the central nervous system, in which axons lose their myelin sheath. How does the loss of the myelin sheath alter nerve conduction velocity?