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Biology

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Biology

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Nervous System

How Neurons Signal at Synapses

Description

Neurons communicate through synapses, the points where two neurons meet to pass on signals. At a synapse, the sending neuron is the presynaptic cell, and the receiving neuron is the postsynaptic cell. Most neurons can serve in both roles because they send and receive information.

Electrical synap...

Transcript

神经系统细胞

在不断从基本身体机能

向感官刺激接受发送信息

神经元之间通过电信号的交流

称为动作电位

这些动作电位产生于细胞体内

从轴突传到轴突末梢

然后传递到下一个细胞

两个神经元的接触点称为突触

电突触允许细胞之间

可通过缝隙连接进行直接沟通

且会经常进行快速活动的协调

总的说 大多数突触是含有

突触间隙的化学突触

物理空间存在于

发出信号的神经元

这叫突触前细胞

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