Question

Explain the process of urine formation in detail.​

Answer 1

Urine is formed in three main steps- glomerular filtration, reabsorption and secretion. It comprises 95 % water and 5% wastes such as ions of sodium, potassium and calcium, and nitrogenous wastes such as creatinine, urea and ammonia. Osmoregulation is the process of maintaining homeostasis of the body.

Answer 2

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The process of Urine formation :

• The blood keeps flowing continuously in the kidney.

• The impure blood is brought by the renal artery.

• Both kidney filters about 1000-1200 ml of blood every minute.

• The filtration of blood takes place inside the glomerulus.

• Glucose, salts, amino acids urea, etc are filtered from the blood and collected in bowman’s capsule.

• Filtrate blood is passed through the renal tubule and the cells of the renal tubule re-absorbs the useful substances from the renal except waste product urea.

• The renal vein carries pure blood from the kidney.

• The urine from the nephron is transported to the collecting duct.

• From each kidney, one ureter is connected to the urinary bladder