How does urine form in the kidneys?

Answer 1

The blood passes into the renal capsule through the renal artery, then moves into the renalcortex, and pyramids to the nephrons, through capillaries. The blood then moves into the beginning of the nephrons, called Bowman's capsules where water and impurities begin to be pushed out. Blood pressure helps to power this function. The function of the nephrons is to reabsorb glucose, and water, while excreting wastes: salts, bicarbonates, hydrogen ions, drugs, excess vitamins, etc.

The blood continues its purging through the nephrons, then exits through the capillaries to the renal vein, which returns the blood to the lungs for oxygenation. The separated urine moves through the renal pelvis and descends through the ureter, into the bladder for ultimate expulsion (urination).

Answer 2

Urine forms in the kidneys through a process called filtration. Blood enters the kidneys through the renal arteries, where it is filtered to remove waste products, excess ions, and water. The filtered waste and excess substances are then concentrated and turned into urine, which is eventually passed out of the body through the ureters, bladder, and urethra.