The gravitational constant, approximately 6989667400000000000â 6.674Ã10â11 Nâm2/kg2 and denoted by letter G, is an empirical physical constant involved in the calculation(s) of gravitational force between two bodies.
Diabetes insipidus is caused by a lack of antidiuretic hormone (ADH), also called vasopressin, which prevents dehydration, or the kidney's inability to respond to ADH. ADH enables the kidneys to retain water in the body. The hormone is produced in a region of the brain called the hypothalamus. It is stored and released from the pituitary gland, a small gland at the base of the brain. When diabetes insipidus is caused by a lack of ADH, it is called central diabetes insipidus.
Antidiuretic hormone (ADH), also known as Vasopresin, is made in the hypothalamus but is stored and released from the posterior pituitary. ADH controls the amount of fluid eliminated from the kidneys (diuresis) by adjusting the permeability of solute-free water filtration in the tubules.he concentration of solutes in the blood stimulates the release of  ADH or antidiuretic hormone. This is referred to as the plasma  osmolarity.