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The Stomach quiz

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  • Which hormone does not stimulate the secretion of HCl in the stomach?
    Somatostatin
  • What step of vitamin B-12 absorption occurs in the stomach?
    Binding to intrinsic factor
  • What is a function of the stomach related to digestion?
    Mechanical digestion
  • What type of chemical digestion does the stomach perform?
    Chemical digestion of proteins
  • Which is not one of the functions of stomach acid? a) Denaturing proteins b) Killing bacteria c) Activating pepsin d) Absorbing nutrients
    d) Absorbing nutrients
  • What function does the low pH of the stomach serve? a) Neutralizes stomach acid b) Activates digestive enzymes c) Inhibits enzyme activity d) Promotes bacterial growth
    b) Activates digestive enzymes
  • In what part of the GI tract is pepsin active? a) Mouth b) Esophagus c) Stomach d) Small intestine
    c) Stomach
  • Which type of digestion does not occur in the stomach?
    Carbohydrate digestion
  • Which of these is not a function of the stomach? a) Storing food b) Mixing food with gastric juices c) Absorbing water d) Producing intrinsic factor
    c) Absorbing water
  • What stimulates the secretion of hydrochloric acid (HCl) in the stomach? a) Gastrin b) Secretin c) Cholecystokinin d) Insulin
    a) Gastrin
  • Which component of gastric juice is most helpful in preventing the stomach from digesting itself? a) Hydrochloric acid b) Pepsin c) Mucus d) Lipase
    c) Mucus
  • What event occurs in the stomach because of its low pH?
    Activation of pepsinogen to pepsin
  • Which body site contains hydrochloric acid that inhibits many microbes? a) Mouth b) Stomach c) Small intestine d) Large intestine
    b) Stomach
  • What is incorrect about the stomach's pH environment?
    It has a high pH environment
  • What enzyme is secreted by the stomach?
    Pepsinogen
  • In which direction do the peristaltic contractions of the stomach's smooth muscle move contents? a) Towards the esophagus b) Towards the pyloric sphincter c) In a circular motion d) Towards the liver
    b) Towards the pyloric sphincter
  • What protects the lining of the stomach from acidic gastric juices? a) Bicarbonate b) Mucosal barrier c) Gastrin d) Pepsin
    b) Mucosal barrier
  • Which part of the GI tract contains highly acidic digestive juices? a) Mouth b) Esophagus c) Stomach d) Small intestine
    c) Stomach