Nerv06/introduction/mechanism of conductance

POINT!

An action potential, located at one point of neuronal membrane, the adjacent point depolarizes and an action potential is generated.

The neuronal cell body is like a golf ball covered with 火薬 and the neuronal fiber is like 導火線

connected to that golf ball. When the 火薬is is lit somewhere, the adjacent火薬would warm up to

the firing level and the fire would move to that point.

A fire at one point would ignite the adjacent point.

With this principle, the 火薬 on the golf ball would catch fire in a 同心円状 manner from the

ogirinal point

ゴルフボールにまぶした火薬は発火時点から同心円状に 着火して いくでしょう。

Also, on a 導火線, a fire on one point would move along the line.

導火線では

点状の火が線に沿って移動するでしょう。

動画と音声での説明

ある場所の活動電位は、

同じ膜の隣の場所

を強く脱分極させ、

When point C of a neuronal membrane is stimulated strong enough, action potential is generated and

overshoot occurs. When this happens, because of overshoot in point C, the adjacent point D

depolarizes. This depolarization is strong enough to reach the firing level (threshold, threshold

voltage) and with delay, an action potential is generated. An action potential at one point,

strongly depolarizes the adjacent point in the same membrane, and with delay, generates an action

potential.

Challenge Quiz

1.

神経細胞膜の1カ所に発生した活動電位が、同じ細胞において、膜の他の部分へ移動することを　 {=伝導.~伝

2.

3.

4.

5.

6.

を　 過分極.脱分極  正解! させる。

An action potential at one point of a neuronal membrane, hyperpolarizes.depolarizes  正解! the

7.

8.

9.

る。 正. 誤  正解!

10.

11.

ない。 正.誤  正解!