- #1
Roxy
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1. How does an Action potential start in the nerve. Does it just receive a stimulus and suddenly the inside of the nerve depolarizes?? How does the inside of the nerve become more positive??
2. In people with Multiple Sclerosis the myelin on the nerve is broken down & the AP doesn't tavel down the nerve..Why can't the AP move down the nerve just like it does when the myelin is there? How does the AP tavel down a myelinated nerve? I know there is no Na/K voltagate gated channels where the myelin used to be so how does it travel?
Thanks
2. In people with Multiple Sclerosis the myelin on the nerve is broken down & the AP doesn't tavel down the nerve..Why can't the AP move down the nerve just like it does when the myelin is there? How does the AP tavel down a myelinated nerve? I know there is no Na/K voltagate gated channels where the myelin used to be so how does it travel?
Thanks
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