Saturday, April 19, 2025

The Two Forms of Calcium in the Human Body

Calcium is an essential mineral in the human body, found in two primary forms: bound calcium in bone tissue and free, ionized calcium in the blood and soft tissues. About 99% of the body’s calcium is stored in bones as hydroxyapatite, a solid, crystalline combination of calcium and phosphate. This structure provides strength, stability, and resilience to the skeleton, enabling bones to bear weight and endure physical forces. Additionally, this stored calcium acts as a reservoir, releasing calcium into the bloodstream when dietary intake is inadequate, helping to maintain calcium balance and support bone health.

The remaining 1% of calcium exists in its ionized form, circulating in the body’s fluids and playing a crucial role in various biological functions. Ionized calcium is essential for nerve transmission, facilitating the efficient transfer of electrical signals between neurons. This process supports brain function, reflexes, and communication between the nervous system and muscles. In muscle contraction, calcium enables the interaction between actin and myosin filaments within muscle cells, powering both voluntary movements, like those involved in locomotion, and involuntary actions such as the rhythmic beating of the heart and the contraction of digestive muscles.
The Two Forms of Calcium in the Human Body
at
Labels: , , ,

Popular articles

  • Nutrition of potato
    The many differences on potato variety, cultivation conditions and other factors made it difficult to clearly define the nutritional value o...
  • Saccharin: History, Properties, and Uses of an Artificial Sweetener
    Saccharin is an artificial sweetener that provides sweetness without food energy or calories. It is one of the earliest sugar substitutes, h...
  • Vitamin D deficiency rickets
    In an infant or child this deficiency results in the disease called rickets, in which the rapidly growing bones grow soft and eventually ben...
  • Hemoglobin as Transport Protein
    One of the important transport proteins is hemoglobin, the iron-containing protein of blood, transport oxygen from the lungs to other parts ...
  • Glycogen – History and Property
    Glycogen – History and Property Glycogen is the only homopolysaccharides of important in human metabolism. Glycogen presence in liver was fi...

My Blog List

  • Food Processing
    Essential oils are concentrated, aromatic liquids extracted from various parts of plants, including flowers, leaves, stems, bark, roots, seeds, and fruit p...
  • Marketing Strategy And Concept
    Integrated Marketing Communications (IMC) puts the customer at the center of a brand’s storytelling by aligning all marketing channels—advertising, social ...