Bioscience - Digestive 2020

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1. Name the digestive enzymes that are produced in and around the mouth to begin digestive work on the food bolus in the mouth

  • A and C are correct (Salivary amylase & Lingual lipase)
  • Salivary amylase
  • Enterokinase
  • Lingual lipase
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2. The stomach is lined with folds called

  • Rugae
  • Trabeculae Carnae
  • Crista
  • Lamellae

3. The nature and purpose of gastrin in gastric physiology is

  • A hormone that stimulates gastric motility (churning) and HCl production
  • A hormone that stimulates pepsinogen production
  • An enzyme that breaks down macromolecules
  • A peptidase

4. The pancreatic secretions are carried in an alkaline medium, this is necessary because

  • The enzymes work best in alkaline conditions
  • Pancreatic hormones cannot be made in neutral pH conditions
  • Food bolus from stomach is strongly acidic, alkaline helps neutralize and prevents pancreatic enzyme denaturation
  • Bile works best in alkaline conditions

5. Which of the following hormones help to trigger the release of pancreatic juice?

  • Secretin and leptin
  • Gastrin and secretin
  • Cholecystokinin and secretin
  • Gastrin and leptin
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