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9 Cards in this Set
- Front
- Back
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Crystallization process-calcium, phosphate, and other ions are taken from the blood plasma and deposited in a bone tissue |
Mineral Deposition |
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Process of dissolving bone and releasing minerals into the blood |
Mineral Resorption -performed by osteoclasts by producing hydrochloric acid |
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DNA, RNA, ATP, phospholipids, pH buffers |
Phosphate |
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Neuron communication, muscle contraction, blood clotting, and exocytosis |
Calcium |
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_________ depends on a balance between dietary intake, urinary and fecal losses, and exchanges between osseous tissue |
Calcium homeostasis |
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Blood calcium homeostasis is regulated by three hormones |
Calcitriol, Calcitonin, and parathyroid hormone |
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A form of vitamind d produced by the sequential action of the ________, __________, and Kidney Promotes bone resorption |
Calcitriol -Bone -Liver --raises calcium concentration |
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1.Secreted by the parathyroid glands when blood calcium level is low. 2. Raises calcium blood levels by 4 mechanisms |
Parathyroid hormone -increases the osteoclast population -promotoes calcium reabsorption by the kidneys so less is lost in urine -promotes the final step of calcitriol synthesis in the kidneys, enhacing effect of calcitriol -inhibits bone deposition by osteoblasts |
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Secreted of cells by thyroid gland |
Calcitonin -Lowers blood calcium concentration by both osteoclast inhibition and osteoblast stimulation -Important in children, weak effect in adults Reduces bone loss in women during pregnancy and lactation. |
