Exocytosis: The process where vesicles fuse with the plasma membrane and release their contents into the extracellular space.
Endocytosis: The process where cells absorb material from outside their cell membranes via engulfing with their cell membrane.
Neurotransmitter Release:The process where neurotransmitters stored in vesicles are released into synaptic clefts to transmit information across synapses.