「Nerve06/autonomic nervous system and synapses/excitatory and inhibitory synapses」の版間の差分

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シナプス小胞にアドレナリン、ノルアドレナリン、アセチルコリンが含まれている場合、放出によりシナプス後膜は脱分極し、閾値は減少します(下図、左)。このようなシナプスを興奮性シナプスといいます。伝達物質がGABAなどの場合、シナプス後膜は過分極し、閾値は増大し、興奮性は抑制されます(下図、右)。このようなシナプスを抑制性シナプスといいます。
When synaptic transmitters, such as adrenaline, nor-adrenaline, acethylcholine, are released, the post-synaptic membrane depolarizes and the threshold is lowered (left half of figure).  Such synaptic transmission is excitatory.  When synaptic transmitters, such as GABA is released, the post-synaptic membrane hyperpolarizes, and the threshold is hightened (right half of figure).  Such synaptic transmission is inhibitory.


[[ファイル:00254en.jpg|500px]]  
[[ファイル:00254en.jpg|500px]]  
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//LEVEL:2
//LEVEL:2
//RAND
//RAND
興奮性シナプス伝達の結果、シナプス後膜の電位は  {=脱分極.~過分極} する。
As a result of excitatory synaptic transmission, the potential of the post-synaptic membrane {=depolarizes~hyperpolarizes}.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
抑制性シナプス伝達の結果、シナプス後膜の電位は  {~脱分極.=過分極} する。
As a result of inhibitory synaptic transmission, the potential of the post-synaptic membrane {~depolarizes~=hyperpolarizes}.
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2014年11月18日 (火) 21:47時点における最新版

When synaptic transmitters, such as adrenaline, nor-adrenaline, acethylcholine, are released, the post-synaptic membrane depolarizes and the threshold is lowered (left half of figure). Such synaptic transmission is excitatory. When synaptic transmitters, such as GABA is released, the post-synaptic membrane hyperpolarizes, and the threshold is hightened (right half of figure). Such synaptic transmission is inhibitory.

00254en.jpg

Challenge Quiz

1.

As a result of excitatory synaptic transmission, the potential of the post-synaptic membrane depolarizes hyperpolarizes .

2.

As a result of inhibitory synaptic transmission, the potential of the post-synaptic membrane depolarizes hyperpolarizes .