A 44-year-old member asked:
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describe how a nerve impulse is transmitted along to axon?

1 doctor answer
Dr. Lawrence Smith
29 years experience Clinical Psychology
It's complex: 1. Polarization of the neuron's membrane; 2. Resting potential gives the neuron a rest; 3. Action potential: sodium ions move inside the membrane; 4. Repolarization: potassium ions move outside, and sodium ions stay inside the membrane; 5. Hyperpolarization: more potassium ions are on the outside than there are sodium ions on the inside; 6. Refractory period puts everything back to normal.
Answered on Apr 22, 2015

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