Synapse: A synapse is a small gap between two neurons where neurotransmitters are released to allow communication between them.
Resting Potential: Resting potential is the electrical charge across the membrane of a neuron when it is not sending an impulse. It represents the neuron at rest and ready to receive or generate an impulse.
Action Potential: An action potential refers to the brief change in electrical potential that occurs along the membrane of a neuron during an impulse. It involves depolarization and repolarization of the cell membrane.