GENERAL HISTOLOGY

Detailed explanation-1: -What is calcitonin? Calcitonin is a hormone that your thyroid gland makes and releases to help regulate calcium levels in your blood by decreasing it. Calcitonin opposes the actions of the parathyroid hormone, which is a hormone that increases your blood calcium levels.

Detailed explanation-2: -Parathyroid hormone is directly involved in the bones, kidneys, and small intestine. In the bones, PTH stimulates the release of calcium in an indirect process through osteoclasts which ultimately leads to the resorption of the bones.

Detailed explanation-3: -Calcitonin reduces calcium levels in the blood by two main mechanisms: 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.

Detailed explanation-4: -Calcitonin is an amino acid hormone produced and released in the thyroid gland, a butterfly-shaped gland that helps the body manage metabolism, muscle control, and other essential functions. Calcitonin helps regulate calcium levels in the blood-and appears to work against the parathyroid hormone (PTH).

Detailed explanation-5: -Calcitonin is a 32 amino acid hormone secreted by the C-cells of the thyroid gland. Calcitonin has been preserved during the transition from ocean-based life to land dwellers and is phylogenetically older than parathyroid hormone.