1. Potassium channels open, allowing potassium ions to move out.
2. Some sodium channels open...
Biology, 06.04.2020 01:05 jermainedwards
1. Potassium channels open, allowing potassium ions to move out.
2. Some sodium channels open in the dendrite.
3. All ion channels close and the Na+/K+ exchange pump starts working.
4. Sodium ions diffuse toward a node of Ranvier.
5. Lights hit the retina.
6. The threshold level is reached.
7. Many sodium channels open in the axon membrane, allowing sodium ions to move in.
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