File:AP propagation membrane model view.jpg
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原始檔案 （1,225 × 961 像素，檔案大小：273 KB，MIME 類型：image/jpeg）
摘要
| 描述 |
English: A diagram in three parts showing how an action potential propagates down a membrane, using the electrical membrane model as a guide. A local depolarization opens local sodium channels. Sodium current causes membrane depolarization (T1) which spreads to adjacent membrane, depolarizing it as well (T2). Sodium channels then open in this adjacent membrane, and the depolarization spreads further down the membrane (T4). Meanwhile, delayed rectifyer potassium current flows in the original membrane patch, causing the falling phase of the AP. T3 is not shown but can be imagined by interpolation.
Note that in T4, depolarization spreads in both directions down the membrane (i.e. also toward the place where the AP originated. A second action potential is not fired in that membrane because it is refractory, thus allowing for one-way AP conduction. Diagram drawn by me in Corel Draw! |
| 日期 | 2005年七月12日 (原始上傳日期) |
| 來源 | Transferred from en.wikipedia to Commons by JohnnyMrNinja using CommonsHelper. |
| 作者 | 原上傳者為英文維基百科的Synaptidude |
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原始上傳日誌
The original description page was here. All following user names refer to en.wikipedia.
- 2005-07-12 23:03 Synaptidude 1225×961× (280028 bytes) A diagram in three parts showing how an action potential propagates down a membrane, using the electrical membrane model as a guide. A local depolarization opens local sodium channels. Sodium current causes membrane depolarization (T1) which spreads to ad
- 2005-07-12 23:00 Synaptidude 1225×961× (280147 bytes) A diagram in three parts showing how an action potential propagates down a membrane, using the electrical membrane model as a guide. A local depolarization opens local sodium channels. Sodium current causes membrane depolarization (T1) which spreads to ad
- 2005-07-06 16:53 Synaptidude 1225×961× (277303 bytes) A diagram in three parts showing how an action potential propagates down a membrane, using the electrical membrane model as a guide. A local depolarization opens local sodium channels. Sodium current causes membrane depolarization (T1) which spreads to ad
- 2005-07-06 16:47 Synaptidude 1225×961× (283434 bytes) A diagram in three parts showing how an action potential propagates down a membrane, using the electrical membrane model as a guide. A local depolarization opens local sodium channels. Sodium current causes membrane depolarization (T1) which spreads to
- 2005-07-06 16:45 Synaptidude 2401×2485× (376122 bytes) A diagram in three parts showing how an action potential propagates down a membrane, using the electrical membrane model as a guide. A local depolarization opens local sodium channels. Sodium current causes membrane depolarization (T1) which spreads to
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| 目前 | 2009年2月24日 (二) 04:51 | | 1,225 × 961（273 KB） | File Upload Bot (Magnus Manske) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|A diagram in three parts showing how an action potential propagates down a membrane, using the electric |
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