Sodium Variations: Effects on ECF/ICF

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Low sodium in the ECF is called hyponatremia. This condition can cause sever physical symptoms such as muscular weakness, dizziness, hypotension (low blood pressure), tachycardia (rapid heart beat), shock, and coma. Sodium is an incredibly important ion involved in water balance and also synaptic transmissions (neuron and muscle cell firing). The easiest way to remember sodium's role in water balance is to remember that ...