Action potential


Depolarised (+40mv):

1.    The VS Nachannel is shut.

2.    3Naare actively pumped out of the axon.

3.    2K+ions are actively pumped into the axon, making it negative.

4.    K+ions diffuse out through the, always open, K+channel.

5.    Anions make the axon more negative.

6.    The axon is polarised because the inside is more negative than the outside.

7.    Na/K+pump closes.

8.    Axon becomes depolarised because the outside is…


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