While PTH acts to increase the concentration of ionic calcium (Ca 2+) in the blood, calcitonin, a hormone produced by the parafollicular cells (C cells) of the thyroid gland, acts to decrease ionic calcium concentration.hile PTH acts to increase the concentration of ionic calcium (Ca 2+) in the blood, calcitonin, a hormone produced by the parafollicular cells (C cells) of the thyroid gland, acts to decrease ionic calcium concentration.
Best Answer: Florida's average width is about 160 miles down Through the peninsula; but is nearly 400 miles east to west across the panhandle. Florida is an average of 162 miles (260 km) wide in the peninsula.
Kamchatka Peninsula - Student Encyclopedia (Ages 11 and up) Lying between the Sea of Okhotsk on the west and the Pacific Ocean and Bering Sea on the east, the Kamchatka Peninsula of Russia is about 750 miles (1,200 kilometers) long and about 300 miles (480 kilometers) across at its widest point. Its total area is approximately 140,000 square miles (360,000 square kilometers).