All of the ion channels that well talk about in the neuron

Question

All of the ion channels that we'll talk about in the neuron use passive transport. Based on this information and the information presented on the previous slide of typical ion concentrations in the neuron, tell in which direction (into the cell or out of the cell) each ion will move when the appropriate channel opens. 

1. Sodium (Na⁺)
2. Potassium (K⁺)
3. Calcium (Ca²⁺)