Metabolic Wastes and the Liver (OCR A-Level Biology A): Flashcards
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Practise the cards
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Definition of excretion
Definition of excretion
Removal of metabolic wastes & excess substances from organism
Five main metabolic waste categories in mammals
Five main metabolic waste categories in mammals
CO₂, ammonia, urea, uric acid, bile pigments
Condition caused by CO₂ accumulation
Condition caused by CO₂ accumulation
Acidosis (blood pH falls below normal)
Condition caused by uric acid crystals in joints
Condition caused by uric acid crystals in joints
Gout (painful form of arthritis)
Two blood vessels supplying the liver
Two blood vessels supplying the liver
Hepatic artery & hepatic portal vein
Wide capillaries in liver lobules
Wide capillaries in liver lobules
Sinusoids
Process removing NH₂ groups from amino acids
Process removing NH₂ groups from amino acids
Deamination
What ornithine cycle produces from ammonia & CO₂
What ornithine cycle produces from ammonia & CO₂
Urea (one molecule per cycle)
Cycle converting lactate to glucose in liver
Cycle converting lactate to glucose in liver
Cori cycle
Condition from fat accumulation during alcohol use
Condition from fat accumulation during alcohol use
Fatty liver