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OCR A Biology

Waste Excreted Bile Products Breakdown Liver Nitrogenous Main

The main waste products excreted in mammals are CO2 (lungs), bile pigments (liver/intestines), and nitrogenous waste like urea (kidneys).

Os principais produtos residuais excretados em mamíferos são CO2 (pulmões), pigmentos biliares (fígado/intestino) e resíduos nitrogenados como ureia (rins).

Front Main metabolic waste products excreted in mammals
Back
  • CO2 (excreted from lungs as waste product of respiration)
  • Bile pigments (formed from breakdown of haemoglobin from old RBC in liver, excreted in bile from liver and into Small intestine via gall bladder and bile duct)
  • Nitrogenous waste products (urea) - formed from breakdown of XS AA in liver, urea is the nitrogenous waste and is excreted by kidney in urine

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