A 39-year-old member asked:
do blood and urine mix in the kidneys?
1 doctor answer
Dr. James Strader answered
21 years experience Cardiology
Not usually: Urine is made from water and waste products the blood stream delivers to the kidneys. In effect, the kidneys are giant filters, but the blood vessels pass through microscopic structures which do the filtering. The blood vessels and urine vessels do not mix; there is a thin layer of cells which separate the two, but allow the transfer of waste chemicals in the blood into the urine.
Answered on Nov 27, 2016
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