2006-10-30 05:24:06 · 2 answers · asked by Ducky 1 in Science & Mathematics ➔ Biology
Osmolarity is a measure of the number of particles dissolved in a given volume of fluid. Changing either the number of particles or the volume of fluid will therefore change osmolarity. Maintaining the body fluids at a constant osmolarity therefore involves regulating the volume of water contained within the body. The volume of urine produced in a single day can vary from a minimum of 500 ml up to a maximum of 23 l. Therefore when water is short, relatively little is lost and should the body take on an additional fluid load, up to 23 l of that excess may be excreted each day. Control of the volume of water excreted by the kidney rests with the hormone anti-diuretic hormone (ADH also known as vasopressin; diuresis means water loss, therefore anti-diuretic hormone can be translated as is anti water loss hormone).
2006-10-30 06:14:22 · answer #1 · answered by cucumis_sativus 5 · 0⤊ 0⤋
2
2016-09-23 17:12:50 · answer #2 · answered by ? 3 · 0⤊ 0⤋