What mineral serves the function of forming and maintaining teeth and bones?

What mineral serves the function of forming and maintaining teeth and bones?

• A. Calcium
• B. Iron
• C. Potassium
• D. Sodium

Answer: (A)

Calcium is the mineral that forms and maintains teeth and bones. It is the main component of hydroxyapatite, the hard crystals that give bones and teeth their strength. The skeleton also serves as a reservoir to keep blood calcium levels stable for essential functions like nerve signaling and muscle contraction. Adequate calcium supports bone density and helps keep teeth strong against wear and decay. The other minerals listed don’t serve as the primary building blocks for bone and tooth structure—iron is mainly for oxygen transport and energy use, while potassium and sodium act as electrolytes involved in fluid balance and nerve impulses rather than forming the mineral matrix of bone and teeth.

Calcium is the mineral that forms and maintains teeth and bones. It is the main component of hydroxyapatite, the hard crystals that give bones and teeth their strength. The skeleton also serves as a reservoir to keep blood calcium levels stable for essential functions like nerve signaling and muscle contraction. Adequate calcium supports bone density and helps keep teeth strong against wear and decay. The other minerals listed don’t serve as the primary building blocks for bone and tooth structure—iron is mainly for oxygen transport and energy use, while potassium and sodium act as electrolytes involved in fluid balance and nerve impulses rather than forming the mineral matrix of bone and teeth.