M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:	Which of the following correctly lists the order of the opening and closing of sodium/potassium channels in neurons?

sodium channels open, potassium channels open, potassium channels close, sodium channels close

sodium channels open, potassium channels open, sodium channels close, potassium channels close

sodium channels close, potassium channels close, sodium channels open, potassium channels open

potassium channels close, sodium channels close, sodium channels open, potassium channels open