Which Must Happen in Order for an Action Potential to Begin

question 10

Multiple Choice

Which must happen in order for an action potential to begin?

• A)The membrane potential must be at the Na+ equilibrium potential.
• B)Na⁺ influx must exceed K⁺ efflux.
• C)The membrane must be out of the relative refractory period.
• D)Na⁺ channels must all be inactivated.
• E)Multiple inhibitory postsynaptic potentials (IPSPs)must summate.

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