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Questions and Answers
What percentage of magnesium in the human body is found in muscle and other organs?
What percentage of magnesium in the human body is found in muscle and other organs?
Which of the following statements about magnesium in serum is true?
Which of the following statements about magnesium in serum is true?
How much magnesium is typically found in a 70 kg human body?
How much magnesium is typically found in a 70 kg human body?
What is the main form of magnesium that is physiologically active in the body?
What is the main form of magnesium that is physiologically active in the body?
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Which of the following ions shows a similar physiological role to magnesium in the body?
Which of the following ions shows a similar physiological role to magnesium in the body?
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Study Notes
Magnesium in the Body
- Magnesium (Mg2+) is the fourth most abundant cation in the human body and the second most abundant intracellular ion.
- An average 70 kg human body contains approximately 1 mole (24 grams) of magnesium.
- Bone stores about 53% of the total body magnesium.
- Muscle and other organs/soft tissue hold about 46%.
- Only less than 1% is found in serum and red blood cells.
- In serum, about one-third of the magnesium is bound to protein, primarily albumin.
- The remaining two-thirds of the serum magnesium are present in two forms: about 61% as a free/ionized ion, and about 5% as complexes with other ions like phosphate (PO4-) and citrate.
- Similar to calcium (Ca2+), the free, ionized form of magnesium is physiologically active.
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Description
Explore the essential role of magnesium in the human body through this informative quiz. Learn about its abundance, distribution, and physiological functions in various tissues and fluids. Test your knowledge on magnesium's significance for health and wellness.
