Anatomy and Physiology Review Nerve Impulse Conduction
Mechanism for nerve impulse conduction – the sodium and chloride ions.
Sodium and chloride are heavily concentrated outside the cell.
Intracellular concentration of potassium
Due to these different concentrations – a neuron is always charged.
Via stimulus – polarity changes = depolarization.
Proteins function as gates and open to either potassium or sodium (NOT BOTH).
Sodium in – potassium out; then repolarization with sodium being actively pumped back out. In the membranes this occurs as an action potential.