Bones have got very large reserve of calcium. So under the influence of calcitonin hormone and parathyroid hormone, the blood calcium level is maintained in very narrow range. Vitamin D is important for absorption of the calcium and also plays some role in maintaining the blood calcium level.
pth, calcitonin,
parathyroid gland and thyroid gland
Parathyroid hormone (PTH) and calcitonin regulate blood calcium levels. PTH increases the calcium concentration in the blood, and calcitonin decreases it.
Calcitonin
The parathyroid glands produce and secrete parathyroid hormone which regulates calcium levels in the blood. Since it increases blood calcium levels, it promotes the function of osteoclasts, which reduce the calcium in bones and promote its increase in the blood stream.
calcitonin
Blood
Parathyroid hormone (PTH) and calcitonin regulate blood calcium levels. PTH increases the calcium concentration in the blood, and calcitonin decreases it.
Calcitonin
parathyroid hormone/calcitonin
Calcitonin
Calcitonin
Parathyroid glands secrete PTH (parathyroid hormone) to regulate blood calcium levels.
The parathyroid glands produce and secrete parathyroid hormone which regulates calcium levels in the blood. Since it increases blood calcium levels, it promotes the function of osteoclasts, which reduce the calcium in bones and promote its increase in the blood stream.
Calcitonin and PTH
calcitonin
The hormone Calcitonin has the effect of reducing blood calcium levels. The hormone comes from the thyroid gland and works in basically three ways. 1. It works to slow absorption of calcium by the intestine. 2. It also inhibits the osteoclast (cells in bone that break down old bone tissue) that raise blood calcium levels. 3. It causes osteoblast (cells in bone that lay down new bone matrix) to form new bone. This explanation is at it's simplest form of course.
It increases the concentration of calcium in the blood. Calcitonin decreases blood calcium levels.
Thyroid gland is normally called "thyroid gland" in medical terms. The combining form is "thyroid-".