Comparative Test 4 (D3)

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mc166589
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118903
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Comparative Test 4 (D3)
Updated:
2011-11-25 10:39:41
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Comparative Anatomy
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Comparative anatomy lecture test number 4.
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  1. What is the function of the liver and pancreas?
    These produce most of the digestive secretions.
  2. The liver is composed of _____ grouped into _____ around a _____.
    • Hepatic plates
    • Lobules
    • Central Vein
  3. Describe the production of bile.
    It is produced in hepatic cells through the breakdown of hemoglobin.
  4. _____ is sent into the intestine to neutralize the acidity of material from the stomach.
    Bile (Which is an alkaline solution)
  5. Descibe the role of bile salts in the intestine.
    These emulsify fats in the intestine, breaking them into small globules with larger surface area which increases the rate at which pancreatic and intestinal lipases and act.
  6. In what animals would the gall bladder be larger and why?
    It would be larger in carnivores and other vertabrates in which fat is an important component of the diet.
  7. In what animals would the gall bladder be very small and why?
    Herbivorous animals, because they lack a need for bile for digestion.
  8. Bile from hepatic cells is collected into _____, then is sent through _____ to the _____ and finally the _____ where it is stored.
    • Bile canaliculi
    • Hepatic ducts
    • Bile ducts
    • Gall bladder
  9. What are the five functions of the liver?
    • Detoxification
    • Conversion of absorbed foods
    • Storage of excess food as glycogen or lipids
    • Synthesis of urea and many plasma proteins
    • Iron metabolism
  10. Describe the function of the hepatic portal vein.
    Carries blood and absorbed materials from the intestine to the liver, where harmful materials are phagocytosed and detoxified.
  11. If food molecules in excess of immediate need are converted to _____ or _____.
    • Glycogen
    • Lipids
  12. Describe the creation of ammonia, urea, or other waste products.
    Amino acids undergo conversion and the amino group is removed and converted into waste products.
  13. Describe the desctruction of blood cells in the body.
    These are destroyed in the spleen, and the hemoglobin that is released is carried to the liver where the iron in the molecule is salvaged and the rest is converted to bile pigments and excreted in the bile.

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