Excretion in Mammals (Liver)

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1. Why does blood from the hepatic artery and hepatic portal vein mix in the sinusoids?

  • To make the system more efficient.
  • To increase the oxygen content of the blood from the hepatic portal vein, providing hepatocytes with plenty of oxygen.
  • To clean the blood.
  • To reduce the oxygen content of the blood from the hepatic portal vein, stopping the hepatocytes from getting oxygen.
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2. What are liver cells called?

  • Glycogens.
  • Hepatocytes
  • Kupffer cells.
  • Ciliated epithelial cells.

3. Briefly, what is carbohydrate metabolism?

  • Hepatocytes convert glucose to glycogen, which is stored in the liver and restored to glucose when needed.
  • Using carbohydrates to increase overall metabolism and assist the liver.
  • Increasing the digestion and metbolism of carbohydrates.
  • Reducing the digestion and metabolism of carbohydrates.

4. Which of these is NOT a function of the liver?

  • Deamination of excess amino acids
  • Carbohydrate metabolism
  • Phosphorylative decarboxylation
  • Detoxification

5. How is oxygenated blood removed from the liver/ returned to the heart?

  • Hepatic portal vein
  • Hepatic vein
  • Portal vein
  • Hepatic artery


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