What happens when you add more sodium ions (Na+) to an isolated nerve? Do you change the action potential? What happens when you add an abundance of potassium (K+) ions?

 

Any help would be appreciated

 

Thanks in advance

 

A

Abundance of potassium ions causes resting potential too become more negative (hyperpolarisation)... this stops activity of nerves...

 

If you add more Na+ ions to a nerve maybe it would increase the frequency of action potentials... but the action potential never changes... it is 'all or nothing'...

thank you very much for your help