Archive | Role

In this article we will discuss about the role of PTH and Vit. D3 in calcium metabolism. Role of PTH in Calcium Metabolism: Hypocalcemia in blood stimulates parathy­roid gland for PTH secretion. During calcium metabolism, it shows following functions— 1. On bones: Drop of Ca++ level in blood, stimulates PTH secretion. PTH uses bones as Ca++-bank from which it with­draws [...]

In this article we will discuss about Role of Hormones in Osmoregulation, Excretion and Thermo Regulation. Endocrine Control on Osmoregulation and Excretion: In mammals, kidney is the main excretory organ. Kidney not only eliminates nitrog­enous waste metabolites but also helps in os­moregulation. 1. Regulation of Water Retention: Hormone vasopressin is secreted from neu­rohypophysis. The chief action of this hor­mone is [...]