[问答题]
Neuronal cells have special membrane proper
9 psq2qek7p(i ties that allow their axons to pr
kd(mrh omzv)0/ i +)nqopagate act
o /+z)(mikm h0)ndqrvion potential from one cell to another. The diagram below shows a portion of an axonal plasma membrane.
1.1.State the role of a sodium-potassium pump in axon.
1.2.Describe the action of the sodium-potassium pump.
2.Distinguish between simple diffusion, facilitated diffusion and active transport.
3.Compare and contrast sodium-potassium pumps and potassium channels.