Question

How do kidneys clean the blood?

Answer 1

Cleaning of blood by the kidney:

1. The kidney is the main organ of the excretory system that is responsible for removing waste from the body.
2. The blood enters the kidney through the renal artery.
3. This artery splits into many small arterioles to reach the nephron.
4. It passes through the small glomerulus in each nephron where the blood gets filtered.
5. The clean blood leaves the kidney through the renal vein.
6. In the kidney tubules, waste molecules like H+, K+, and ammonia are secreted into the filtrate for excretion and useful substances like water, glucose, and Na are absorbed in the loop of Henle.