List the 4 major types of ion channels found in neurons. Are they chemically-gated? Mechanically-gated? or Voltage-gated?
a) Sodium, Potassium, Calcium, Chloride; Chemically-gated
b) Ligand, Mechanosensitive, Voltage, G-protein; Mechanically-gated
c) Calcium, Chloride, Sodium, Potassium; Voltage-gated
d) Potassium, Sodium, Ligand, Mechanosensitive; Voltage-gated