In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System.
Antidiuretic hormone (ADH) (vasopressin). Peptide hormone synthesized in hypothalamus and released from posterior pituitary gland; increases water permeability of kidneys' collecting ducts and causes vasoconstriction.ntidiuretic hormone (ADH) (vasopressin). Peptide hormone synthesized in hypothalamus and released from posterior pituitary gland; increases water permeability of kidneys' collecting ducts and causes vasoconstriction.
The permeability of the distal tubule and collecting duct is controlled by ADH. ADH is produced in the hypothalamus and is stored and released from the pituitary gland. ADH increases the permeability of the distal tubule and collecting duct, so more water is reabsorbed. This causes the urine becomes more concentrated.