chapter 3 nutrition

  1. The gallbladder stores and concentrates ________ .
    Bile
  2. What part of the intestinal tract prevents backflow of food from the stomach into the esophagus?
    esophageal sphincter
  3. As a(n) ________ , an enzyme does not change its chemical structure while promoting other chemical reactions.
    Catalyst
  4. What transport process accounts for the absorption of water?
    Simple Diffusion
  5. Which gastrointestinal hormone stimulates secretion of the components of hydrochloric acid?
    gastrin
  6. Gastrointestinal bacteria in the body ________ .
    assist in the production of vitamins
  7. Which process best describes the action of the pancreas with respect to digestive secretions?
    Bicarbonate is released to neutralize gastric activity
  8. The inner surface of the small intestine ________ .
    Is covered with intestinal projections called villi
  9. Which energy nutrients benefit most by thorough chewing before swallowing?
    Carbohydrates
  10. What organ is the first to receive nutrients that have been absorbed from the digestive tract?
    liver
  11. What kind of nutrients does the lymphatic system carry to the bloodstream?
    Fats and fat - soluble vitamins
  12. At what pH level do the gastrin-producing cells stop secreting gastrin into the stomach?
    1.5
  13. Which nutrients take longer for your body to digest than others?
    fats and proteins
  14. The cartilage in the throat that guards the entrance to the trachea and prevents fluid of food from entering it when a person swallows is known as the ________ .
    epiglottis
  15. What term applies to the wavelike muscular contractions that move food along the digestive tract?
    Peristalsis
Author
Bnasty
ID
336516
Card Set
chapter 3 nutrition
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