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.
Th only hormone known to be secreted by the parathyroid gland is parathyroid hormone (PTS) which helps to regulate calcium balance by stimulating three target organs: bones, kidneys, and intestines. Because of PTH, calcium and phospates are released from bones, increasing concentration of these substances in blood.