ANATOMY

Detailed explanation-1: -In renal physiology, reabsorption or tubular reabsorption is the process by which the nephron removes water and solutes from the tubular fluid (pre-urine) and returns them to the circulating blood.

Detailed explanation-2: -The distal convoluted tubule and collecting ducts are then largely responsible for reabsorbing water as required to produce urine at a concentration that maintains body fluid homeostasis.

Detailed explanation-3: -For example, the secretion of the antidiuretic hormone will increase water reabsorption. Remember that any substance leaving the nephron (reabsorbed) is entering the bloodstream via the peritubular capillaries or vasa recta and will stay in the body.

Detailed explanation-4: -Reabsorption includes passive diffusion, active transport, and cotransport. Water is mostly reabsorbed by the cotransport of glucose and sodium. Filtrate osmolarity changes drastically throughout the nephron as varying amounts of the components of filtrate are reabsorbed in the different parts of the nephron.