Vitamin D is a vital fat-soluble nutrient for regulating calcium and phosphorus metabolism. It includes forms like D2 (from plant sources) and D3 (synthesized in the skin and found in animal-based foods). Its primary role is aiding the absorption of calcium and phosphorus in the intestines, which are vital for …
DeepakRajput 
Calcitonin: Physiology, Pathology, and Clinical Uses
Calcitonin is a hormone produced by the parafollicular cells (C cells) of the thyroid gland. It plays a crucial role in calcium homeostasis by opposing the action of parathyroid hormone (PTH). While PTH raises blood calcium levels, calcitonin works to lower them. 1. Physiology of Calcitonin Source: Calcitonin is produced …
