presynaptic membrane
A specialized area of membrane of the axon terminal that faces the plasma membrane of the neuron or muscle fiber with which the axon terminal establishes a synaptic junction; many synaptic junctions exhibit structural presynaptic characteristics, such as conical, electron-dense internal protrusions, that distinguish it from the remainder of the axon plasma membrane.
GO:0097060
synaptic membrane
is_a
GO:0098793
presynapse
part_of
pre-synaptic membrane
exact
presynaptic plasma membrane
exact