「Nerve06/autonomic nervous system and synapses/characteristics of synapses」の版間の差分
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{{QuizTitle}} | {{QuizTitle}} | ||
<GIFT> | <GIFT> | ||
//LEVEL:2 | //LEVEL:2 | ||
//RAND | //RAND | ||
At synapses, transmission is one-way {=true~false} | At synapses, transmission is one-way {=true~false} | ||
//LEVEL:3 | //LEVEL:3 | ||
//RAND | //RAND | ||
At synapses, because of chemical transmission, the speed, compared to conduction is {~fast~=slow}. | At synapses, because of chemical transmission, the speed, compared to conduction is {~fast~=slow}. | ||
//LEVEL:3 | //LEVEL:3 | ||
//RAND | //RAND | ||
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. | 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 | ||
| 57行目: | 40行目: | ||
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. | 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. | ||
//LEVEL:3 | //LEVEL:3 | ||
//RAND | //RAND | ||
Synapses have {=high~low} sensitivity to drugs. | Synapses have {=high~low} sensitivity to drugs. | ||
//LEVEL:3 | //LEVEL:3 | ||
2014年11月18日 (火) 21:47時点における版
<synaptic delay>
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>
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>
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
At synapses, transmission is one-way true false
At synapses, because of chemical transmission, the speed, compared to conduction is fast slow .
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.
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.
Synapses have high low sensitivity to drugs.
Pre-synaptic membrane is located at nerve ending neuronal cell body dendrites .