Parathyroid Hormone. Parathyroid hormone is the most important endocrine regulator of calcium and phosphorus concentration in extracellular fluid. This hormone is secreted from cells of the parathyroid glands and finds its major target cells in bone and kidney.Another hormone, parathyroid hormone-related protein, binds to the same receptor as parathyroid hormone and has major effects on development. This effect is mediated by stimulating tubular reabsorption of calcium. 2  Another effect of parathyroid hormone on the kidney is to stimulate loss of phosphate ions in urine.
Currently the highest known tree in the world is coast redwood (Sequoia sempervirens (D. Don) Endl.) in United States, California. It is 115.61 m high. But there are credible statements about taller trees in recent past.
In 2002 the volume of its trunk measured about 1487 cubic meters and it was identified as the largest in the world after a close fight with the nearby General Grant tree, after which wood volume was accepted as the determining factor. Itâs not short either, it reaches 275 feet in height.