{"id":2,"date":"2022-05-18T14:26:43","date_gmt":"2022-05-18T14:26:43","guid":{"rendered":"https:\/\/grvcal.grvt.in\/?page_id=2"},"modified":"2022-05-18T17:50:24","modified_gmt":"2022-05-18T17:50:24","slug":"sample-page","status":"publish","type":"page","link":"https:\/\/grvcal.grvt.in\/","title":{"rendered":"GRVCAL ( E – Literature ) – PRODUCT OF GRVT"},"content":{"rendered":"\n

Calcium<\/strong> is a chemical element<\/a> with the symbol<\/a> Ca<\/strong> and atomic number<\/a> 20. As an alkaline earth metal<\/a>, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium<\/a> and barium<\/a>. It is the fifth most abundant element in Earth’s crust, and the third most abundant metal, after iron<\/a> and aluminium<\/a>. The most common calcium compound on Earth is calcium carbonate<\/a>, found in limestone<\/a> and the fossilised remnants of early sea life; gypsum<\/a>, anhydrite<\/a>, fluorite<\/a>, and apatite<\/a> are also sources of calcium. The name derives from Latin<\/a> calx<\/em> “lime<\/a>“, which was obtained from heating limestone.<\/p>\n\n\n\n

Calcium is the most abundant metal and the fifth-most abundant element in the human body<\/a>. As electrolytes<\/a>, calcium ions play a vital role in the physiological<\/a> and biochemical<\/a> processes of organisms and cells<\/a>: in signal transduction<\/a> pathways where they act as a second messenger<\/a>; in neurotransmitter<\/a> release from neurons<\/a>; in contraction of all muscle cell<\/a> types; as cofactors<\/a> in many enzymes<\/a>; and in fertilization<\/a>. Calcium ions outside cells are important for maintaining the potential difference<\/a> across excitable cell membranes<\/a>, protein<\/a> synthesis, and bone formation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth’s crust, and the third most abundant metal, after iron and aluminium. The most … <\/p>\n

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