Условие:
THE KIDNEY
Unfiltered blood enters the kidney for filtration through the renal artery from the heart.
Blood passes to the kidneys in large quantities so that it can be filtered well and have most of
the waste products removed. Renal veins carry the cleaned blood away from each kidney.
Renal veins are wider than renal arteries because they transport blood towards the inferior
vena cava of the heart. The blood returned from the heart through the renal artery contains a
toxic product called urea, and also high levels of salt and large amounts of water. The
kidney’s function is to filter out these unwanted materials.
1. What enters from the heart?
2. What can be filtered and removed?
3. What do renal veins carry?
4. What does the kidney filter?