10 Describe the 3 hormones most connected to calcium managem

10. Describe the 3 hormones most connected to calcium management in the body. What are their targets? How does each affect blood calcium levels? What would stimulate the release of each? Describe the control mechanism. (This is likely 2-4 paragraphs)

Solution

the three hormones that control calcium levels in blood are :

1. parathyroid hormone: this is secreted by the parathyroid gland in response to the low calcium levels in blood. the job of this hormone is to make the blood calcium levels rise by stimulating osteoclast cells. these cells break down the bones in our body to release calcium in blood.Apart from osteoclasts, It also sends message to kidneys to conserve the calcium by reabsorbing it from the blood. the final step it does is to absorb calcium in the gut by releasing vitamin D.

2. Vitamin D : this also is a hormone that regulates calcium levels in body. it is a steroid by structure and is also known as calcitriol. the most important role of vitamin D is to absorb the calcium from our food through the small intestine. If someone has a deficiency of vitamin D it could lead to low blood calcium and bone weakening diseases like osteoalacia and rickets.

3. Calcitonin: the last hormone is produced by the thyroid gland. as opposed to the first two, this hormone lowers the blood calcium levels. it stops the osteoclasts from functioning so that the breaking down of bone is slowed down. It also makes the calcium excretion more in the urine which means low reabsorption of calcium by the kidneys. Generally calcitonin is secreted in response to high blood calcium levels or because of a thyroid tumor.