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.
Parathyroid hormone (PTH) and Vitamin D help manage calcium balance in the body. 1  PTH is made by the parathyroid glands. These are four small glands located in the neck behind the thyroid gland. 2  Vitamin D is obtained when the skin is exposed to sunlight, and from dietary sources.