Put simply, volume refers to the number of contracts traded. For any trade to occur, the market needs to produce a buyer and a seller. A transaction occurs when buyers and sellers meet and is referred to as the market price.
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.
Low blood calcium levels stimulate the parathyroid gland to produce parathyroid hormone (PTH). PTH stimulates the osteoclasts to break down the bone matrix releasing the trapp â¦ ed calcium thereby raising blood calcium levels.1 person found this useful. The function of these glands is to regulate the amount of calcium in tâ¦. 2  The Functions of Parathyroid Hormone The parathyroid consists of four glands that reside around the thyroid and that release beneficial hormones into your body to maintain your health.