Mineral Storage - . Calcium is needed for communication...

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Mineral Storage The bones are a storage site for calcium and other ions. To recover these important ions, the mineral component of bones must be dissolved. The process of dissolving bone and releasing the minerals into the blood is known as mineral resorption and is the province of osteoclasts . Osteoclasts attach to the bone (in response to low calcium stimuli) and pump hydrogen ions into the space between the osteoclast and the bone. The high acidity dissolves the bone minerals which are released back into the blood. Phosphate and calcium are two important ions that are stored in the bones. Phosphate is a component of DNA , RNA , ATP , and phospholipids
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Unformatted text preview: . Calcium is needed for communication between neurons , muscle contraction , blood clotting and any form of exocytosis. Imbalances in calcium are particularly serious. Hypocalcemia results in over excitability of the nervous system and can result in muscle spasms or seizures. Hypercalcemia causes the depression of the nervous system which may result in coma or death. Calcium Homeostasis Reflecting the importance of calcium in the body, the body has several mechanisms to regulate blood calcium levels. Proper levels of calcium in the blood are maintained by the interactions of calcitriol, parathyroid hormone and calcitonin....
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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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