In general, action potentials that reach the synaptic knobs cause a neurotransmitter to be released into the synaptic cleft.

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。

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The ultrastructural alterations could also be found in synapse, for example, decreased synaptic vesicle, narrow synaptic cleft.

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。

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This divalent cation is released from presynaptic vesicles into the synaptic cleft upon neuronal activity and acts as a modulator of many ligand-gated ion channels.

锌离子随着神经元的活动从突触前膜的囊泡中释放到突触间隙，对突触内受体进行调控。

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When these vesicles dump their contents into the synaptic cleft, the concentration of these ligands rise.

当这些小泡将其内含物释放入突触间隙,这些配体的浓度即增加

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It's called the synaptic cleft and it's filled with extracellular fluid.

这一空间叫做突触间隙,中间充满了细胞外液

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When an action potential comes down this pre-synaptic axon, when it reaches this point here, it sets off the process of these vesicles dumping their content into the synaptic cleft.

当动作电位到达轴突的突触前膜时,当到达这一点时 小泡就将其内含物,排放到突触间隙中去

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