Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Calcitonin Hormone Calcitonin is a calcium-controlling hormone, produced by the thyroid gland that acts primarily on bones. A bone is a constantly remodeling. Cells called osteoclasts remove old bones, and cells called osteoblasts lay down new bone. Calcitonin slows down bone removal by osteoclasts, and promotes bone formation by osteoblasts. It increases the amount of calcium in the bone and decreases the calcium in the blood. PTH, a parathyroid hormone, operates in balance with calcitonin, a thyroid hormone. PTH acts to increase calcium levels in blood, and decrease bone levels of calcium, whereas calcitonin increases calcium levels in bone and decreases calcium levels in the blood. It is important that PTH and calcitonin act in balance, and balance levels of calcium in blood and bones. The most prominent factor controlling calcitonin emission is the concentration of ionized calcium. Elevated blood calcium levels strongly stimulate calcitonin discharge, and discharge is suppressed when calcium...

Get instant access

• Instant, unlimited access to our documents in full
• Swap your work for free access, or pay £4.99
• To see the full version of this document and 149,979 others