what role does it play in human biology?
In humans, sodium is an essential mineral that regulates blood volume, blood pressure, osmotic equilibrium and pH.
Sodium
In humans, sodium is an essential mineral that regulates blood volume, blood pressure, osmotic equilibrium and pH. 
na is the symbol for which of the following chemical elements Sodium what is the historical story of this? In medieval Europe, a compound of sodium with the Latin name of "sodanum" was used as a headache remedy. apart from food, where else is it used? Sodium chloride is extensively used for anti-icing and de-icing and as a preservative. what is the meaning of the second icing method you just mentioned? De-icing is the process of removing snow, ice or frost from a surface. where is it commonly used? Trains, rail switches, aircraft, etc. how is the afore mentioned element used in the transfer of heat? Liquid sodium is used as a heat transfer fluid in some types of nuclear reactors.
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Sodium [SEP] Biological role in humans
In humans, sodium is an essential mineral that regulates blood volume, blood pressure, osmotic equilibrium and pH. The minimum physiological requirement for sodium is estimated to range from about 120 milligrams per day in newborns to 500 milligrams per day over the age of 10.