What are the two basic types of synapses?

The two basic types of synapses are those between two neurons and those between a neuron and effectors, such as muscle cell or gland. The major difference in the two basic types is that the neurotransmitting chemical between a neuron and muscle cell is acetylcholine whereas there are several other types of neurotransmitting chemicals involved between neurons, depending on where in the nervous system the synapse is located.