Final answer:
The most magnesium in the human body is found in the bones, where it constitutes up to 70% of the total magnesium, primarily in the form of complex bone salts mixed with calcium and phosphorus.
Step-by-step explanation:
The majority of the body's magnesium is stored in the bones.
Magnesium is an essential mineral that is crucial for many physiological functions, including muscle and bone health, nervous system function, and numerous biochemical reactions. Approximately 70% of the body's total magnesium content is combined with calcium and phosphorus in the complex salts of bone. The rest is distributed within the soft tissues and bodily fluids, with a significant portion also being intracellular, principally within the soft tissue cells.
Magnesium's role extends to aiding in muscle contraction, nerve control, and acting as a cofactor for various enzymes. It's important to note that although magnesium is present in the soft tissues and fluids, its highest concentration is in the bones, making it a vital component of the skeletal structure.