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Axon with myelin sheath.  Microtubule. Actin. Cadherins.  Protein zero.  Myelin, myelin, myelin. voltage gated potassium channels.

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Spironolactone or aldactone is a potassium-sparing diuretic that gets rid of sodium and water in the circulatory system while saving potassium in the blood. It blocks aldosterone in the kidney which is responsible in regulating the salt and water balance in the body. In using spironolactone, you should watch out for headache, diarrhea, hyperkalemia, electrolyte imbalance, fatigue and GI disturbances.

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BrainU Cartoon: The Action Potential. See how electrical activity allows neurons to communicate in this colorful, interactive animation. Characters include Neuron, Sodium channel, Sodium-potassium pump, Sodium ion, Potassium channel, and Potassium ion. Watch & learn, nervous system, human body

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