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Question
Calcium and Phosphate ions are balanced between blood and other tissues by ______.
Options
Thymosin and Parathormone
Calcitonin and Somatostatin
Collip’s hormone and Calcitonin
Calcitonin and Thymosin
Solution
Calcium and Phosphate ions are balanced between blood and other tissues by Collip’s hormone and Calcitonin.
Explanation:
The parathyroids secrete a peptide hormone called parathormone (PTH). It is also called Collip’s hormone. It regulates calcium and phosphate balance between blood and other tissues. The release of parathormone increases blood calcium levels by taking calcium from bones, increasing calcium absorption in the digestive tract and reducing the loss of calcium in the urine. Secretion of parathormone is under feedback control of blood calcium level. The concentration of calcium and phosphate is maintained by parathormone and calcitonin. These two hormones form an antagonistic pair like insulin and glucagon.
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