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High Well being Classes
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Organic position of calcium
The principle position of calcium within the physique is to supply construction and energy to the skeleton. Within the earliest types of exoskeleton and in shells, the structural rigidity is usually supplied by calcium carbonate. In vertebrates resembling reptiles, fish, mammals and people, the construction of the skeleton is principally supplied by a type of calcium phosphate known as hydroxyapatite crystals, that are present in collagen. Calcium ions on bone surfaces work together with these current within the bodily fluids, subsequently enabling ion trade, which is crucial in sustaining the steadiness of calcium within the blood and bone.
Within the extracellular fluid, calcium serves as a reservoir for circulating calcium. This calcium enters the extracellular fluid by way of the gastrointestinal tract the place it’s absorbed from the meals an individual has eaten. Calcium additionally turns into accessible via a course of known as bone resorption, which is the breakdown of bone tissue by cells known as osteoclasts.
Calcium circulating within the blood is concerned in a number of important processes together with coagulation, nerve sign transmission, hormone signalling and muscle contraction.
Calcium makes use of usually
Sources – “calcium uses”
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