它由星形细胞瘤，少突胶质细胞瘤，室管膜瘤发展而来，它们是由神经外胚层细胞诱导的。

It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.

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而CT的优势在于能清楚地表现椎间盘、硬膜囊、关节突和椎管内外结构的变化。

The advantages of CT scan are that the changes of intervertebral disc, dural sca, articular process and spinal canal, can be showed clearly.

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关节囊滑膜下层的阳性纤维分布密度最高，并可见丛状结构突向滑膜层；

The density of the distribution of LENK positive nerve fibers was the highest in the subsynovium of TMJ capsule, and the plexi structures proceeding to the synovial membrane were observed.

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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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another thing that you'd find if you looked inside the axon terminals of any of these pre-synaptic membranes, you'd find lots of vesicles or some membrane bound compartments that contain special chemicals called neurotransmitters.

如果你仔细观察,突触前膜的轴突末梢内部,你会发现很多小泡,即膜包被的结构,包含有称为神经递质的特殊化合物

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