Action Potentials Flashcards

1
Q

Resting Potential

A

Voltage gated sodium (Na) and potassium (K) channels are CLOSED

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2
Q

Slow Depolarisation

A

Voltage gated sodium and potassium channels are CLOSED

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3
Q

Fast Depolarisation

A

Sodium channels OPEN and sodium rushes in – depolarises to positive membrane potential

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4
Q

Repolarisation

A

– Sodium channels inactivated
– Potassium channels OPEN
– becomes negative

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5
Q

Hyperpolarisation

A

– Potassium channels remain OPEN

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