L2 Organization of local networks

7 important questions on L2 Organization of local networks

What is the equilibrium potential?

Process that refers to the membrane potential at which there is not net ion movement across the membrane for a given ion channel.

What is membrane potential?

Is the electrical potential difference between the intracellular and extracellular environment. It is measured in mV.

What is membrane resistance?

Is a measure of how easy for currents flow through the membrane, and is a function of open ion channels
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What is membrane capacitance?

Is a measure of how easily the electrical charge balance can be established across the intracellular and extracellular environment, and is a function of the lipid bi-layer.

how many ions through membrane to get voltage change to occur. High capacitance = low action potential velocity

What is an action potential threshold?

The membrane potential at which voltage-gated sodium channels open. This leads to rapid flow of positively charged sodium going into the cell and depolarising the membrane

What is the absolute refractory period?

During this period the membrane is completely unresponsive to further stimulation as sodium channels are inactivated, thus no action potential can be generated.

What is the relative refractory period?

Is the time period during which a second action potential can be generated however requires stronger than a normal triggering event as potassium channels are slow to close.

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