Question

Describe the pathway of blood through the kidney

Answer 1

Blood flows to the kidneys through the right and left renal arteries. Inside each kidney these branch into smaller arterioles. The blood is at very high pressure and flows through the arterioles into tiny knot of vessels called the Glomerulus.

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Answer 2

Blood reaches the kidneys through the renal arteries. The renal arteries originate from the abdominal aorta artery. After circulating through the kidneys, blood returns to the abdominal vena cava through the renal veins.

kidney blood filtration steps

Filtration: The first step in the formation of urine is the filtration process, which takes place inside the renal corpuscle. Due to the high pressure of blood within the capillaries of the glomerulus, substances leak into the renal capsule.

Reabsorption: At this stage, some substances from the filtrate are reabsorbed into the blood.

Secretion: The transfer of molecules present in the blood into the lumen of the nephron occurs. Among the main products secreted, we can mention hydrogen, potassium and ammonia.

Urine = Filtration - Reabsorption + Secretion

With this information, we can conclude that Blood reaches the kidneys through the renal arteries. The renal arteries originate from the abdominal aorta artery. After circulating through the kidneys, blood returns to the abdominal vena cava through the renal veins.

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