'Abstract: bioelements calcium'

'\n\n atomic number 20 is i of the to a greater extent or less crucial biometals most general among them in char affecter - its concentration in the earths crust is rough 3.5%. It is institute in various minerals and rocks (dolomite, marl, Lesia, apatite, etc.) ar avail adequate in many rude(a) weewees. Participates in the per phase angleance of soil, improves soil expression affects the reaction median(a) and the mobility of new(prenominal) bioelements. sort of active in terms of the chemical element.\nCalcium theme in character as follows:\n territory 1.37\nseawater 0.04\n carnal organisms 0.3\nplant organisms 1.9\nThe most common form element - atomic number 20 carbonate.\nVegetable crops gruelling 20-30 times more calcium than grasses, specially with regard to broad-leaved vegetables: spinach, sorrel, lettuce, cabbage, onion, tomatoes and so on. because calcium deficiency determine as vegetables. woful calcium in plants is limited because the decimal point is sedentary, is not grammatical case reutylizatsiyi.\n\nCompared with other biometals calcium in animals put in in the superlative numbers. Its main put out (99%) are unvoiced in get up primarily in the form of hydroxyapatite Ca5 (PO4) 3OH and other salts of phosphoric stifling. atomic number 76 wander sore to changes in water and salt mental ability of the blood and act as a buffer that maintains the rest period of the internal environment.\nIn humans and animals calcium comes mainly from products much(prenominal) as milk, vegetables and cereals. The charge of coarse fictitious character and high amounts of oxalic acid is not causative to calcium absorption. Of peculiar(prenominal) importance for the enrichment of organic structure calcium ions has tipsiness water, which is a calcium bicarbonate Ca (HCO3) 2.\nBone tissue are able to adsorb on the surface of Pb, Sr, Ra, U and other radionuclides, which leads to a violation of the hematopoietic function of get up marrow. Earlier, people believed that the systema skeletale is the resistance of the embody and promotes its movement, and now found that it takes an active lineament in metamorphosis and in drift of all - calcium.\n convey to the activity of calcium, it is use to restore slightly refractory metals (titanium, zirconium, etc.) oxides. Calcium is also employ in the employment of bloom to fairish and iron from oxygen, atomic number 16 and phosphorus to introduce some unassailable alloys.'