Kidney Nephrons and Urine Control

Kidney nephrons and urine control depend on filtration, reabsorption, secretion, and excretion. The kidneys filter nearly 180 liters of blood each day. They first remove water and dissolved substances, then return nearly all of the filtrate to the bloodstream with help from osmoregulatory hormones. This process clears wastes...

The kidneys filter the blood several times a day via a multi step process performed mostly in the nephron, the main functional unit.

Starting in the renal corpuscle water and most solutes are filtered from the capillaries in the glomerulus into the surrounding Bowman's capsule. The pressure in blood vessels forces the filtrate into the c...