In their studies of the resting membrane potential of the squid giant axon, Hodgkin and Katz found that:

In their studies of the resting membrane potential of the squid giant axon, Hodgkin and Katz found that:

In their studies of the resting membrane potential of the squid giant axon, Hodgkin and Katz found that:



  1. increasing potassium outside the axon depolarized the axon's potential.
  2. increasing potassium outside the axon hyperpolarized the axon's potential.
  3. increasing sodium outside the axon depolarized the axon's potential.
  4. increasing sodium outside the axon hyperpolarized the axon's potential.
  5. changing external sodium and potassium had identical effects on the resting axon potential.

Answer: 1