Ultracytological localization of K(+)-dependent, p-nitrophenylphosphatase activity in cat facial nerve.

The transport of Na and K ions across the plasma membrane of the neuron seems to be a prerequisite for the conductance of nerve impulses. The localization of Na-K ATPase activity in the sciatic nerve, among other peripheral nerves, has been previously reported by several authors. However, little is known as to the localization of Na-K ATPase activity in the facial nerve.