terminal bouton
Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal bouton is a specialized region of it.
GO:0098793
presynapse
is_a
GO:0043679
axon terminus
part_of
bouton
exact
presynaptic bouton
exact
synaptic bouton
exact
terminal button
exact