What vital functions does parathyroid hormone control in the body?

Parathyroid hormone (PTH) plays a crucial role in maintaining calcium and phosphorus balance in the body, making it essential for various physiological processes. The main function of PTH is to increase the concentration of calcium in the blood by promoting the release of calcium from bones, enhancing the absorption of calcium in the intestines (often in conjunction with vitamin D), and reducing the excretion of calcium through the kidneys.

Additionally, PTH influences phosphorus levels, as its action tends to lower phosphorus concentrations by promoting renal excretion. This balancing act between calcium and phosphorus is vital for maintaining bone health, muscle function, and the proper functioning of the nervous system. Understanding the specific role of PTH in regulating these minerals is key for those involved in hemodialysis and renal care, as patients with kidney dysfunction often encounter imbalances in calcium and phosphorus that require careful management.