lecture 2

Question 1

What are the concentrations of sodium and potassium EC and IC?

Answer 1

sodium= 5mm EC, 150 IC 
potassium= 145 EC, 15 IC

Question 2

How is membrane potential measured?

Answer 2

Electrode is filled with 1m of KCl to compare. The tip in the IC which generates around -70mV- mostly set up by NA+/K+ ATPase= generates 20% of the charge