A
A.Synapses may be axodendritic, axosomatic, or axoaxonic. 突触可以是轴突-树突，轴突-胞体或轴突-轴突突触。
B
B.Postsynaptic membranes and measures about 200nm. 突触间隙是突触前膜和突触后膜之间的间隙，大小约为200nm。
C
C.Presynaptic vesicles do not contain the neurotransmitter substance. 突触前囊泡不包含神经递质。
D
D.All neurons produce and release several types of transmitter substances at all their nerve endings. 所有神经元在其所有神经末梢均可产生并释放几种类型的递质。
E
E.The subsynaptic web lies beneath the presynaptic membrane. 突触下纤网位于突触前膜下方。
