The reasons for the demise of the Minoan civilization continue to be debated. The rise of the Mycenaean civilization in the mid-2nd millennium BC on the Greek mainland and the evidence of their cultural influence on Minoan art and trade make them the most likely cause.
The hormone produced by the para follicular cells of the thyroid gland is calcitonin (CT). CT can decrease the level of calcium in the blood by.
The thyroid and parathyroid glands regulate blood calcium. When blood calcium is low, the parathyroid glands release parathyroid hormone, which breaks down bone to release calcium into the blood. When blood calcium is high, the thyroid gland releases calcitonin, which reduces the levels of calcium in the blood.Vitamin D facilitates intestinal calcium absorption, and the action of parathyroid hormone, produced by the parathyroid gland, enhances it.he thyroid is a bow-shaped gland located in front of the neck that produces the thyroid hormones thyroxine, or T4, and triiodothyronine, or T3. The thyroid gland also produces calcitonin -- a hormone that corrects high blood calcium.