「Nerve06/autonomic nervous system and synapses/characteristics of synapses」の版間の差分

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synaptic delay
<synaptic delay>
[[ファイル:02700en.jpg|250px|left]]  
[[ファイル:02700en.jpg|250px|left]]  


Compared to conduction within a neuron, synaptic transmission is a time-consuming process.  The time it takes for one synaptic transmission is said to be one millisecond.{{-}}  
Compared to conduction within a neuron, synaptic transmission is a time-consuming process.  The time it takes for one synaptic transmission is said to be one millisecond.{{-}}  


fatigue
<fatigue>


[[ファイル:02519en.jpg|250px|left]]
[[ファイル:02519en.jpg|250px|left]]
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With repeated synaptic transmission, decrease in the transmitter and efficiency of transmission may take place.  With such 'fatigue' an action potential arriving at the pre-synaptic membrane, may not be able to elicit action potential in the post-synaptic membrane.{{-}}
With repeated synaptic transmission, decrease in the transmitter and efficiency of transmission may take place.  With such 'fatigue' an action potential arriving at the pre-synaptic membrane, may not be able to elicit action potential in the post-synaptic membrane.{{-}}


 
synaptic potentiation
<synaptic potentiation>
[[ファイル:02701en.jpg|250px|left]]
[[ファイル:02701en.jpg|250px|left]]


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{{-}}
{{-}}


one-way
<one-way>
 
At synapses, pre and post are determined.  It is a one-way mechanism.
シナプスは、前膜／後膜と方向性が決まっており、一方通行です。


薬物の影響を受けやすいです。
<sensitive to drug effects>


{{QuizTitle}}
{{QuizTitle}}
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//LEVEL:2
//LEVEL:2
//RAND
//RAND
シナプスの伝達は、一方向のみである。 {=正.~誤}  
At synapses, transmission is one-way {=tru.~false}  


//LEVEL:3
//LEVEL:3
//RAND
//RAND
シナプスでは、化学的に情報が伝達されるので、伝達速度は、神経線維の伝導速度と比べて　 {~速い.=遅い} 。
At synapses, because of chemical transmission, the speed, compared to conduction is {~fast.=slow}.
 


//LEVEL:3
//LEVEL:3
//RAND
//RAND
シナプス前膜に2個の活動電位が到来すると、シナプス後膜に発生する活動電位の数は、 {~2未満.~ちょうど2.~2より多い.=条件により一定しない} 。
If, after the first action potential arriving at the pre-synaptic membrane, there was one action potential generated in the post-synaptic membrane, and after the second action potential arriving at the pre-synaptic membrane, there were two action potentials generated in the post-synaptic membrane,  {=potentiation.~fatigue} took place.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
シナプス前膜に2個の活動電位が到来し、最初の1個に対してシナプス後膜に1個の活動電位が発生し、次の1個に対してシナプス後膜に2個の活動電位が発生した場合、この現象は　 {=反復刺激後増強.~疲労} と表現される。


//LEVEL:3
If, after the first action potential arriving at the pre-synaptic membrane, there was one action potential generated in the post-synaptic membrane, and after the second action potential arriving at the pre-synaptic membrane, there were no action potential generated in the post-synaptic membrane,  {~potentiation.=fatigue} took place.
//RAND
 
シナプス前膜に2個の活動電位が到来し、最初の1個に対してシナプス後膜に1個の活動電位が発生し、次の1個に対してシナプス後膜に0個の活動電位が発生した場合、この現象は　 {~反復刺激後増強.=疲労} と表現される。
 


//LEVEL:3
//LEVEL:3
//RAND
//RAND
シナプスは、低酸素や薬物の影響を　 {=受けやすい.~受けにくい} 。
Synapses have {=high.~low} sensitivity to drugs.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
シナプスの前膜は、 {=神経終末.~神経細胞体.~樹状突起} に存在する。
Pre-synaptic membrane is located at {=nerve ending.~neuronal cell body.~dendrites}.
</GIFT>
</GIFT>

2012年9月21日 (金) 15:45時点における版

<synaptic delay>

02700en.jpg

Compared to conduction within a neuron, synaptic transmission is a time-consuming process. The time it takes for one synaptic transmission is said to be one millisecond.

<fatigue>

02519en.jpg

With repeated synaptic transmission, decrease in the transmitter and efficiency of transmission may take place. With such 'fatigue' an action potential arriving at the pre-synaptic membrane, may not be able to elicit action potential in the post-synaptic membrane.


<synaptic potentiation>

02701en.jpg

With repeated synaptic transmission, increase in the transmitter, post-synaptic membrane and efficiency of transmission may take place. With such 'potentiation' an action potential arriving at the pre-synaptic membrane, may elicit many action potentials in the post-synaptic membrane.

<one-way> At synapses, pre and post are determined. It is a one-way mechanism.

<sensitive to drug effects>

Challenge Quiz

1.

At synapses, transmission is one-way tru. false

2.

At synapses, because of chemical transmission, the speed, compared to conduction is fast.slow .

3.

If, after the first action potential arriving at the pre-synaptic membrane, there was one action potential generated in the post-synaptic membrane, and after the second action potential arriving at the pre-synaptic membrane, there were two action potentials generated in the post-synaptic membrane, potentiation. fatigue took place.

4.

If, after the first action potential arriving at the pre-synaptic membrane, there was one action potential generated in the post-synaptic membrane, and after the second action potential arriving at the pre-synaptic membrane, there were no action potential generated in the post-synaptic membrane, potentiation.fatigue took place.

5.

Synapses have high. low sensitivity to drugs.

6.

Pre-synaptic membrane is located at nerve ending. neuronal cell body. dendrites .

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