Nicotinic acetylcholine receptors allow both sodium and potassium to flow across the cell membrane when the receptors are activated. Which statement is true about the flow of ions through nicotinic receptors? Potassium only flows through an open nicotinic receptor only when there is no sodium present. More sodium ions pass through an open nicotinic receptor than pass potassium ions. An equal number of sodium and potassium ions pass through an open nicotinic receptor. More potassium ions pass through an open nicotinic receptor than pass sodium ions.

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