The following are true about the sodium channels:
a. they are made up of polypeptide chains
b. have the highest densities at the nodes of Ranvier
c. open in response to depolarization
d. remain open as long as depolarization is maintained
a. they are made up of polypeptide chains
b. have the highest densities at the nodes of Ranvier
c. open in response to depolarization
d. remain open as long as depolarization is maintained