电信号到达传递神经元的突触附近后，释放化学物质包。

At the side of a synapse that belongs to the transmitting neuron, an electrical signal arrives and releases packets of chemicals.

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临床上主要表现为：快速生长或生长突然加速的包块，溃疡，骨质破坏和神经侵犯。

The main clinical findings included the rapid and sudden growth, ulceration, bone destruction and nerve infiltration.

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脑膜炎是包绕脊髓和脑的薄膜的严重炎症，可以导致死亡或脑和神经系统的永久性损害。

Meningitis is a serious inflammation of the lining that surrounds the spinal cord and brain. It can result in death or permanent injury to the brain and nervous system.

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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

耶鲁公开课 - 生物医学工程探索课程节选