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.
Bahamas!     Positioned a mere 50 miles off the coast of Florida, the Bahamas is a 100,000 sq-mile archipelago that   extends over 500 miles. It's 700 islands to â¦ tal an estimated land area of 5,382 square miles and register a highest land elevation of 206 feet.