Acid-Base and Electrolyte Balance — MCQs

Q: Maximum storage of magnesium occurs in which part of the body?

Bone. ***Bone*** - Approximately **50-60%** of the body's total magnesium is stored in the **bone**, largely in conjunction with calcium and phosphate. - Bone magnesium serves as a **reservoir**, helping to maintain stable extracellular magnesium concentrations. *Adipose tissue* - Adipose tissue has a relatively **low concentration of magnesium** compared to other tissues. - Its primary function is energy storage, not mineral storage. *Skeletal muscles* - While skeletal muscles contain a significant amount of intracellular magnesium, accounting for about **20% of total body magnesium**, it is not the *maximum* storage site. - Magnesium in muscle is crucial for **muscle contraction** and energy metabolism. *Blood* - Only about **1% of total body magnesium** is found in the blood. - Blood magnesium is tightly regulated, with free ionized magnesium being the **physiologically active form**.

Acid-Base and Electrolyte Balance — MCQs

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Acid-Base Chemistry and Buffers

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pH Regulation in Body Fluids

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Respiratory Regulation of Acid-Base Balance

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Renal Regulation of Acid-Base Balance

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Respiratory and Metabolic Acidosis

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Respiratory and Metabolic Alkalosis

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Mixed Acid-Base Disorders

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Interpretation of Arterial Blood Gases

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Electrolyte Homeostasis

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Sodium and Water Balance

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Potassium Balance

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Calcium and Phosphate Metabolism

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