Question
Describe briefly any 5 major physiological ions.
Answer :
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Physiological ions play a vital role in maintaining cellular functions, transmitting signals, and regulating various processes in the human body. One of the most important ions is sodium (Na⁺), which is essential for maintaining fluid balance, generating action potentials in nerve cells, and regulating muscle contraction. The sodium-potassium pump actively moves sodium out of cells and potassium into cells, ensuring proper cell excitability and osmotic balance. Potassium (K⁺) is another critical ion that contributes to resting membrane potential, nerve impulse conduction, and cardiac rhythm regulation.
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