Electrical synapse, animation
Videonummer 11938424
| Electrical synapse. Animation showing the detail of a gap junction at an electrical synapse. Electrical synapses use sodium ions (red) to transmit an electrical signal, rather than the neurotransmitters used in a chemical synapse. A gap junction is a channel between two adjacent cells. Each cell's plasma membrane (orange) holds hemichannels (purple), or connexons, that are each formed of six connexin subunit proteins. Where the plasma membranes are close to each other the connexons line up to form a channel that joins the two cells. One rotation of the six subunits about the central axis mediates the transition from an open to a closed state. The arrival of the action potential (spike in voltage) opens the channels and sodium ions rush through them. This depolarises the cell membranes, propagating the signal in the next cell. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Biocosmos / Francis Leroy & Michael Pierard |
| Modell-Rechte: | nicht erforderlich |
| Länge: | 15 Sekunden |
| Seitenverhältnis: | 16:9 |
| Restrictions: | - |
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