BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The specific calcium regulating hormones, parathyroid hormone, calcitriol and calcitonin, affect calcium and phosphorus concentration and supply by acting on bone, kidney and intestine.

Detailed explanation-2: -Calcium plays important roles in the electrical activity and pumping function of the heart. Calcium particles enter the heart muscle cells during each heartbeat and contribute to the electrical signal that coordinates the heart’s function.

Detailed explanation-3: -Blood calcium levels are regulated by parathyroid hormone (PTH), which is produced by the parathyroid glands. PTH is released in response to low blood calcium levels. It increases calcium levels by targeting the skeleton, the kidneys, and the intestine.

Detailed explanation-4: -Calcium homeostasis is maintained by actions of hormones that regulate calcium transport in the gut, kidneys, and bone. The 3 primary hormones are parathyroid hormone (PTH) 1, 25-dihydroxyvitamin D-3 (Vitamin D3), and calcitonin.