Gastrointestinal System Module #9
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Questions and Answers

What is the primary function of the gastrointestinal tract?

  • Mechanical digestion of food
  • Secretion of digestive enzymes
  • Elimination of waste products from the body
  • Absorption of nutrients into the bloodstream (correct)

    • What type of digestion occurs in the stomach and small intestine?

  • Mechanical digestion only
  • Chemical digestion only
  • Both mechanical and chemical digestion (correct)
  • Neither mechanical nor chemical digestion

    • What is the role of the salivary glands in digestion?

  • To mix food with saliva
  • To absorb nutrients into the bloodstream
  • To secrete enzymes to break down carbohydrates (correct)
  • To secrete acid into the mouth

    • What is the term for the passage of molecules through the plasma membranes of cells lining the stomach and intestines into the blood and lymph?

    <p>Absorption</p> Signup and view all the answers

    What is the term for the muscles in the organ wall that rhythmically contract and relax to mix food and secretions together and to move the mixture through the system?

    <p>Mixing and Propulsion</p> Signup and view all the answers

    What is the term for the breakdown of food into molecules small enough to be absorbed?

    <p>Digestion</p> Signup and view all the answers

    What is the function of the saliva produced by the salivary glands?

    <p>to break down carbohydrates</p> Signup and view all the answers

    Which of the following is NOT a layer of the GI tract?

    <p>Adventitia</p> Signup and view all the answers

    What is the function of the muscularis mucosae?

    <p>to create folds in the mucosa</p> Signup and view all the answers

    Which of the following is responsible for controlling the passage of food from the pharynx to the esophagus?

    <p>Upper esophageal sphincter</p> Signup and view all the answers

    What is the name of the contractions that move food through the GI tract?

    <p>Peristalsis</p> Signup and view all the answers

    What is the function of the enteric nervous system?

    <p>to regulate digestion and absorption</p> Signup and view all the answers

    What is the name of the fold that binds organs to one another and to the walls of the abdominal cavity?

    <p>Peritoneal fold</p> Signup and view all the answers

    What is the main function of the pancreatic juice secreted by the pancreas?

    <p>Emulsification of fats</p> Signup and view all the answers

    What is the name of the hormone secreted by G cells in the stomach?

    <p>Gastrin</p> Signup and view all the answers

    What is the main function of the liver?

    <p>Regulation of blood sugar levels</p> Signup and view all the answers

    What is the name of the valve that separates the small intestine from the large intestine?

    <p>Ileocecal valve</p> Signup and view all the answers

    What is the name of the process by which the liver breaks down fats to produce ATP?

    <p>Beta oxidation</p> Signup and view all the answers

    What is the name of the phase of digestion that occurs when food is in the mouth?

    <p>Cephalic phase</p> Signup and view all the answers

    What is the name of the cells that produce mucous in the stomach?

    <p>Mucous neck cells</p> Signup and view all the answers

    What is the name of the duct that joins the pancreatic duct to form the common bile duct?

    <p>Accessory duct</p> Signup and view all the answers

    What is the name of the process by which the liver removes bilirubin from the blood?

    <p>Bilirubin elimination</p> Signup and view all the answers

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