What do neuroscientists mean when they use the term "kiss and run"?
A)The presynaptic and postsynaptic membranes actually touch or "kiss."
B)Synaptic vesicles touch or "kiss" each other inside the presynaptic terminal.
C)Neurotransmitter molecules "kiss" receptors, and then return to the synaptic gap.
D)Synaptic vesicles "kiss" the axon terminal membrane, releasing only a part of their contents.

Question

What do neuroscientists mean when they use the term "kiss and run"? 
A)The presynaptic and postsynaptic membranes actually touch or "kiss." 
B)Synaptic vesicles touch or "kiss" each other inside the presynaptic terminal. 
C)Neurotransmitter molecules "kiss" receptors, and then return to the synaptic gap. 
D)Synaptic vesicles "kiss" the axon terminal membrane, releasing only a part of their contents.

Quizplus · Accepted Answer

"Kiss and run" refers to the process where synaptic vesicles briefly touch or "kiss" the axon terminal membrane, releasing only a part of their contents before quickly withdrawing. This is in contrast to full fusion, where the entire contents of the vesicle are released into the synaptic gap.

What Do Neuroscientists Mean When They Use the Term "Kiss