02. Excretion, Urea and Kidney
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8 Terms
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What is excretion?
Removal of wastes produced by body due to metabolism
2
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What are the excretory organs and what do they excrete?
Lungs - Carbon dioxide and water in expired air
Kidneys - Urea, creatinine and uric acid in urine
Skin - Urea in sweat
Liver - Bile pigments in faeces
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What are the kidney’s functions?
Excretion and osmoregulation
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How is urea formed?
Excess amino acids are deaminated in the liver -> amino group is removed and converted into ammonia -> then into urea
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How does blood enter the kidney?
Renal artery
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How does blood exit the kidney?
Renal vein
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Draw and label the kidney and bladder diagram
Yes
8
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Draw and label a kidney
Ye
Note 
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