What is the junction between the axon of one neuron and the dendrite of another neuron called?

Axon endings release from their synaptic vesicles a neurotransmitter substance known as:

Parkinson's disease,characterized by tremors and rigidity of limbs,is caused by the degeneration of brain cells involved in movement control and the use of which neurotransmitter?

The space between two adjoining neurons where the chemical transmitter is released is known as:

Identify the sequential steps occurring in a chemical synapse.

Electrical synapse shows following features $EXCEPT$ . . . . . . .