8Th Grade Research Paper On Calcium .

809 WordsFeb 17, 20124 Pages
Calcium is not only found in our bones and teeth , but is also found in different layers of dirt , and animals' systems . Calcium is one of the most important and abundant minerals in the body . The element calcium was first discovered by Sir Humphry Davy, a British chemist, in 1808, in England . Calcium has a dull gray , silver color . It is a solid and in chemical terms, calcium is reactive and soft for a metal , though harder than lead, it can be cut with a knife with difficulty. It is a silvery metallic element that must be extracted by electrolysis from a fused salt like calcium chloride . Once produced, it rapidly forms a gray-white oxide and nitride coating when exposed to air. Calcium is one of the most important and abundant minerals in the body. Besides providing the skeletal structure for bones and teeth, calcium plays a key role in many other day-to-day functions of the body. Calcium is important for the normal clotting of the blood, the conduction of nerve impulses, and the contraction and relaxation of muscles and blood vessels, as well as the regulation of body fluids, including hormones and enzymes. In fact, calcium is so important that your body has a feedback system to maintain calcium at a constant level. Your body has a similar system for sodium and potassium, too. Whenever the blood and bodily functions need more calcium, it is pulled from your bones, where it is stored. " Your body can’t make its own calcium, so the only way to get enough is to eat calcium-rich foods." And if you don’t get enough calcium in your diet, you can end up with weakened bones, increasing the risk for fractures later in life. Calcium cannot be found alone in nature. Calcium is found mostly as limestone, gypsum and fluorite. Stalagmites and stalactites contain calcium carbonate. Calcium is always present in every plant, as it is essential for its growth. It is

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