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10.24 Explain the significance of sodium, potassium, magnesium and calcium in biological fluids

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Significance of sodium potassium, magnesium and calcium in biological fluids-

Sodium-

It is mainly found in blood plasma and also in the interstitial fluid which surrounds the cell.
$Na^{+}$ ions help in the transmission of nerve signals also for the regulating water in the plasma membrane.
Also for the transport of sugars and amino acids into the cells.

Potassium-

These ions are highly present within cell fluids.
Helps in activating many enzymes
To produce ATP it oxidises the glucose molecule.
Also helps in the transmission of nerve signals.

Magnesium and calcium-

Plays an important role in neuromuscular function (by magnesium), interneuronal transmission, cell membrane integrity and blood coagulation(by calcium)
Mg helps in maintains normal blood circulation in our body.

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