A&p II- The Digestive System

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Review for test 3


Questions and Answers
  • 1. 
    What causes cholecystokinin & secretin to be secreted?
    • A. 

      Fats

    • B. 

      Carbohydrates

    • C. 

      Partially digested proteins

    • D. 

      Saliva

    • E. 

      H+

  • 2. 
    This is made up of undigested food residue, mucus, sloughed-off epithelial cells, bacteria, water.
    • A. 

      Chyme

    • B. 

      Bile

    • C. 

      Feces

    • D. 

      Saliva

  • 3. 
    The thoracic duct is part of the ______________ system.
  • 4. 
    CCK is responsible for contractions of the ___________________, and the small intestine secretes CCK in response to __________   _____________.
  • 5. 
    The ___________ system helps absorb lipids via the ______________.
  • 6. 
    ____________ are lymph capillaries in the core of villi which absorbs fats.
    • A. 

      Peyer's patches

    • B. 

      Lacteals

    • C. 

      Border brushes

    • D. 

      Serosa

  • 7. 
    The _________ ___________ controls the exit of food from the _________ to the ___________ intestine.
  • 8. 
    This is a bolus of food mixed with the secretions of the stomach that is converted to a fatty or acidic paste.
    • A. 

      Chyme

    • B. 

      Bile

    • C. 

      Saliva

    • D. 

      Feces

    • E. 

      Paste

  • 9. 
    This prevents digestion, by enzymes and the acidic environment, of the stomach itself.
    • A. 

      Villi

    • B. 

      Gall bladder

    • C. 

      Mucus

    • D. 

      Chyme

    • E. 

      Bile

  • 10. 
    During the ____________ phase, saliva  is produced in the mouth and digestive enzymes are produced in the stomach.
  • 11. 
    The major function(s) of the large intestine are to:
    • A. 

      Absorb water

    • B. 

      Absorb fats

    • C. 

      Digest proteins

    • D. 

      Eliminate urine

    • E. 

      Eliminate feces

  • 12. 
    Digestion is completed here, and virtually all nutrient absorption happens here.
    • A. 

      Mouth

    • B. 

      Stomach

    • C. 

      Small intestine

    • D. 

      Large intestine

    • E. 

      Rectum

  • 13. 
    __________________ break down peptides into amino acids.
  • 14. 
    ___________   hydrolyzes maltose into glucose.
  • 15. 
    ____________ hydrolyzes sucrose into glucose and fructose.
  • 16. 
    _________ hydrolyzes lactose into glucose and galactose.
  • 17. 
    Aerobic respiration produces __ ATP per molecule of glucose.
    • A. 

      4

    • B. 

      6

    • C. 

      36

    • D. 

      2

    • E. 

      32

  • 18. 
    Anaerobic respiration produces __ ATP per molecule of glucose
    • A. 

      4

    • B. 

      6

    • C. 

      36

    • D. 

      2

    • E. 

      32

  • 19. 
    _________ respiration uses oxygen.
  • 20. 
    Aerobic respiration produces ____________  ATP than anaerobic.
    • A. 

      More

    • B. 

      Less

  • 21. 
    Proteins yield ___ calories of energy per gram, fats yield __ calories of energy per gram, and carbohydrates yield __ calories of energy per gram.
  • 22. 
    Low pH increases gastrin release.
    • A. 

      True

    • B. 

      False

  • 23. 
    Acidic chyme in the duodenum increases __________ secretion.
    • A. 

      Increases

    • B. 

      Decreases

    • C. 

      Does not affect

  • 24. 
    Acidic chyme in the ___________ increases CCK secretion.
    • A. 

      Stomach, CCK

    • B. 

      Esophagus, gastrin

    • C. 

      Intestine, CCK

    • D. 

      Intestine, gastrin

  • 25. 
    Low pH  _____________ gastrin secretion.
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