Chapter 6 introduced an essential part of the cell: the. plasma membrane. Thanks to the selective permeability of. phospholipid bilayers and the activity of membrane trans-. port proteins, this structure creates an internal environment. that is different from conditions outside the cell. Our task.
When calcium levels decrease, this stimulates the parathyroid gland to release parathyroid hormone. Parathyroid hormone encourages the normal process of bone breakdown (essential for maintenance and growth of the bone). This process of bone breakdown releases calcium into the bloodstream.
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.