Matching Pairs Nervous system FundamentalsOnline version Resting and Action potential by Dr MAHABOOB KHAN SULAIMAN 1 Also called a nerve impulse transmitted by axons 2 The interior of the cell becomes less negative due to an influx of sodium ions 3 The specific period during which potassium ions diffuse out of the neuron due to a change in membrane permeability 4 The neuron cannot respond to a second stimulus, no matter how strong 5 An exceptionally strong stimulus can trigger a response Absolute refractory period Depolarization Action potential Relative refractory period Repolarization