Problem:
Describe the answer of all the questions:
Question 1: Why does the neuronal resting membrane potential approximate to the Nernst potential for K+ ? Explain in detail.
Question 2: During the action potential, what causes voltage-gated Na+ channels to close rapidly after opening even though the membrane potential is still above threshold? Please justify your answer.
Question 3: How do the cell-attached and whole cell patch clamp techniques differ in the type of information they can provide about ion channels? Please describe your answer.