Flashcards · Biology · The Kidneys
The Urinary System and Urea
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Where is urea made?
In the liver.
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What is urea made from?
The breakdown of excess amino acids.
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Why must urea be removed?
It is toxic if it builds up.
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Which organs remove urea?
The kidneys.
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What do the kidneys make?
Urine.
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What does the ureter do?
Carries urine from the kidney to the bladder.
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What does the bladder do?
Stores urine.
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What does the urethra do?
Carries urine out of the body.
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What does the renal artery carry?
Blood to the kidney.
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What does the renal vein carry?
Blood away from the kidney.
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Can the body store amino acids?
No.
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Which poisonous substance is made first?
Ammonia.
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How is urea carried to the kidneys?
In the blood plasma.
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What else do the kidneys control?
The water content and the ions in the blood.
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Name two other organs that excrete waste.
The lungs and the skin.
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Common mistake about urea?
Saying that it is made in the kidney. It is made in the liver.