(Solved): Which of the following situations occurs in electrically excitable cells? Multiple Choice When Nati ...

Which of the following situations occurs in electrically excitable cells? Multiple Choice When Nation channels open, K ion channels close. The sodium-potassium pump moves sodium into the cell. Depolarization causes voltage-gated sodium ion channels to open. Sodium ion channels are opened by high extracellular calcium levels. The opening and closing of ligand-gated channels cause depolarization.