In general, action potentials that reach the synaptic knobs cause a neurotransmitter to be released into the synapticcleft.
一般来说，动作电位到达突触节会导致神经递质释放到突触间隙。
2
The ultrastructural alterations could also be found in synapse, for example, decreased synaptic vesicle, narrow synapticcleft.
同时突触超微结构也出现一定的改变，如：突触小泡减少和突触间隙变窄。
3
This divalent cation is released from presynaptic vesicles into the synapticcleft upon neuronal activity and acts as a modulator of many ligand-gated ion channels.