Resting Potential - Sodium ions are transported out of the cell and potassium ions are actively transported into the cell, Sodium-Potassium pump - carries 3 sodium ions out of the cell for every 2 potassium ions carried into the cell using ATP, Polarised - when there is a constant difference of -60mV across the cell membrane, Action Potential - a sudden and rapid increase in potential from -70mV to +35mV, Depolarisation - occurs when voltage gated sodium channels open allowing sodium ions to diffuse into the cell to create a positive charge causing the action potential, Repolarisation - occurs when sodium channels close and potassium channels open allowing potassium ions to diffuse out of the axon, Hyperpolarisation - occurs when potassium channels are slow to close and the potential difference drops below the resting potential, Refractory period - when both sodium and potassium channels are closed and the resting potential is restored by sodium-potassium pumps, Threshold - the voltage (-50mV) that needs to be achieved to trigger the rest of the voltage-gated sodium channels to open,

Nervous Impulses Definitions Match up

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