# The sodium-potassium pump is important in what cell function?

The Sodium-Potassium pump is essential in neuron signaling. The uneven distribution created by these pumps creates a membrane potential which is around $- 70$ mV. Once they start letting Sodium into the neuron cell, the membrane potential increases. Once it hits the threshold at $- 55$ mV, action potential kicks in, and the signal is sent.