Depolarization is a change in a cell's membrane potential, making it more positive, or less negative. In neurons and some other cells, a large enough depolarization may result in an action potential.
both the electrical and chemical gradients
excitatory postsynaptic potential
ACh is not degraded, therefore, prolonged depolorization is enforced on the post synaptic memebrane
The greater influx of sodium ions results in membrane depolarization. This is because sodium ions carry a positive charge, which leads to a decrease in the membrane potential towards zero or a positive value.
Neurotransmitters are released and go into the synaptic cleft.