「Nerv06/introduction/terms regarding membrane potential」の版間の差分

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[[ファイル:02617en.jpg|400px|left]]  
[[ファイル:02617en.jpg|400px|left]]  


Inside the cell membrane at rest, a negative potential is being generated.  With stimulation, this negative potential decreases.  This is called depolarization.  When the membrane potential decreases to a certain level, an active potential, called the action potential is generated.  The voltage this transaction occurs, is called the threshold, threshold voltage, or firing level.<br>   
Inside the cell membrane at rest, a negative potential is being generated.  With stimulation, this negative potential decreases.  This is called depolarization.  When the membrane potential decreases to a certain level, an active potential, called the action potential is generated.  The voltage at which this transaction occurs, is called the threshold, threshold voltage, or firing level.<br>   
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The characteristics of the action potential are rapid depolarization and overshoot.  Overshoot means switching of the electric polarity in and outside the cell membrane, making it positive inside.<br>
The characteristics of the action potential are rapid depolarization and overshoot.  Overshoot means switching of the electric polarity inside and outside the cell membrane, making it positive inside.<br>
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After overshoot, the negative polarity again increases rapidly,  and the action potential ends, returning to resting membrane potential.  This process is called the re-polarization.   
After overshoot, the negative polarity increases rapidly,  and the action potential ends, returning to the resting membrane potential.  This process is called the re-polarization.   


{{QuizTitle}}
{{QuizTitle}}
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//LEVEL:2
//LEVEL:2
//RAND
//RAND
The process of the (absolute voltage of the) resting membrane potential decreasing and the neuron being activated is call {~hyperpolarization.=depolarization}.   
The process of the (absolute voltage of the) resting membrane potential decreasing and the neuron being activated is called {~hyperpolarization~=depolarization}.   


//LEVEL:3
//LEVEL:3
//RAND
//RAND
The neuron cell membrane {~repolarizes.=depolarizes} when stimulated.   
The neuron cell membrane {~repolarizes~=depolarizes} when stimulated.   
 


//LEVEL:3
//LEVEL:3
//RAND
//RAND
When the membrane potential depolarizes to the firing level (threshold, threshold voltage), the action potential {=is.~is not} generated.   
When the membrane potential depolarizes to the firing level (threshold, threshold voltage), the action potential {=is~is not} generated.   


//LEVEL:4
//RAND
When the membrane potential depolarizes even a small amount from the resting membrane potential, the action potential is always generated. {~true~=false}


//LEVEL:3
//LEVEL:3
//RAND
//RAND
When the membrane potential depolarizes even a small amount from the resting membrane potential, action potential would always be generated. {~true.=false}
When a neuron is stimulated and an overshoot is generated, the electrical potential is switched and inside the membrane becomes {=positive~negative}.
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//LEVEL:3
//RAND
神経細胞が興奮するとovershootが起こり、細胞内の電気的極性が入れかわり、細胞内が　 {=陽性.~陰性} になる。
When a neuron is activated and an overshoot is generated, the electrical potential of a neuron is switched and the  
 


//LEVEL:2
//LEVEL:2
//RAND
//RAND
overshootにひきつづき、膜電位は静止膜電位へ向けて　 {~脱.=再} 分極する。
After overshoot, the membrane {~depolarizes~=repolarizes} to the resting membrane potential.
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2014年11月18日 (火) 21:47時点における最新版

02617en.jpg

Inside the cell membrane at rest, a negative potential is being generated. With stimulation, this negative potential decreases. This is called depolarization. When the membrane potential decreases to a certain level, an active potential, called the action potential is generated. The voltage at which this transaction occurs, is called the threshold, threshold voltage, or firing level.

The characteristics of the action potential are rapid depolarization and overshoot. Overshoot means switching of the electric polarity inside and outside the cell membrane, making it positive inside.

After overshoot, the negative polarity increases rapidly, and the action potential ends, returning to the resting membrane potential. This process is called the re-polarization.

Challenge Quiz

1.

The process of the (absolute voltage of the) resting membrane potential decreasing and the neuron being activated is called hyperpolarization depolarization .

2.

The neuron cell membrane repolarizes depolarizes when stimulated.

3.

When the membrane potential depolarizes to the firing level (threshold, threshold voltage), the action potential is is not generated.

4.

When the membrane potential depolarizes even a small amount from the resting membrane potential, the action potential is always generated. true false

5.

When a neuron is stimulated and an overshoot is generated, the electrical potential is switched and inside the membrane becomes positive negative .

6.

After overshoot, the membrane depolarizes repolarizes to the resting membrane potential.

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