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.
According to the U.S. Census Bureau, the county has a total area of 1,266 square miles (3,280 km2), of which 1,020 square miles (2,600 km2) is land and 246 square miles (640 km2) (19.4%) is water. There is approximately 158.27 miles (254.71 km) of shoreline on Tampa Bay. The county's unincorporated area approximately 888 square miles (2,300 km2), or more than 84 percent of the total land area. Municipalities account for 163 square miles (420 km2).