EVERYDAY SCIENCE

Detailed explanation-1: -Calcitonin decreases calcium levels by blocking the breakdown of bone calcium and by preventing your kidneys from reabsorbing calcium. In other words, it encourages calcium loss through your kidneys.

Detailed explanation-2: -Parathyroid glands produce parathyroid hormone, which plays a key role in the regulation of calcium levels in the blood. Precise calcium levels are important in the human body, since small changes can cause muscle and nerve problems.

Detailed explanation-3: -It inhibits the activity of osteoclasts, which are the cells responsible for breaking down bone. When bone is broken down, the calcium contained in the bone is released into the bloodstream. Therefore, the inhibition of the osteoclasts by calcitonin directly reduces the amount of calcium released into the blood.

Detailed explanation-4: -Calcitonin reduced urinary calcium and magnesium excretion that was attributed to increased reabsorption within the loop of Henle. This enchanced reabsorption was independent of parathyroid hormone; however, it is contingent on a decline in plasma calcium concentration.