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 [...]
Let us Learn about the Disorder of Pancreatic Hormone. Introduction to Diabetes Mellitus: Pancreatic hormones, insulin and glucagon maintain homeostatic condition of blood glucose level by antagonistic functions. Failure of insulin secretion may cause a disease diabetes mellitus. Diabetes mellitus means "siphoning of honey" i.e. large volume of urine with high sugar content. This disease was first reported in Egypt [...]
Let us learn about the Disorders of Pituitary Hormones. (A) Due to hyper secretion of STH: (a) Gigantism: This disease is caused by hyper secretion of STH in child. It is characterized by morphological, physiological, psychological and sexological features (Fig. 12.1). (i) Morphological features: 1. Abnormal body height (7 to 8 ft.) 2. Unusual elongation of limbs and hands. 3. [...]