Digestive System Functions Quiz
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Questions and Answers

What is the primary function of the stomach in the digestive process?

  • To absorb some fat-soluble substances like alcohol and aspirin
  • To mix food with gastric juices and form chyme (correct)
  • To stimulate protein-digesting enzymes and secrete intrinsic factor for vitamin B12 absorption
  • To release food to the duodenum

    • What is the main role of the pancreas in the digestive system?

  • To produce digestive enzymes and bicarbonate (correct)
  • To store, concentrate, and release bile
  • To produce bile salts to emulsify lipids
  • To absorb residual water, electrolytes, and vitamins

    • Which of the following is a mechanical digestion process?

  • Absorption of macro and micro nutrients
  • Chemical breakdown of proteins
  • Peristalsis to propel food
  • Mastication, churning, and segmentation (correct)

    • What is the main function of the large intestine in the digestive process?

    <p>All of the above</p> Signup and view all the answers

    What is the role of bile salts produced by the liver?

    <p>To emulsify lipids for better digestion and absorption</p> Signup and view all the answers

    Which of the following is a characteristic of peristalsis?

    <p>It propels food through the alimentary canal</p> Signup and view all the answers

    What is the primary purpose of the mucosal barrier in the stomach?

    <p>To protect the stomach wall from the acidic environment</p> Signup and view all the answers

    Which of the following is the most important function of hydrochloric acid in the stomach?

    <p>To break down proteins</p> Signup and view all the answers

    What is the primary purpose of the gastric phase of digestion?

    <p>To prepare the food for further digestion in the intestines</p> Signup and view all the answers

    What is the primary function of the intrinsic factor produced in the stomach?

    <p>To facilitate the absorption of vitamin B12</p> Signup and view all the answers

    What is the main reason for the development of stomach ulcers?

    <p>Infection with the H. pylori bacteria</p> Signup and view all the answers

    What is the order in which different types of food are emptied from the stomach into the duodenum?

    <p>Carbohydrates, proteins, fats</p> Signup and view all the answers

    What is the function of the lingual frenulum?

    <p>Connects the tongue to the floor of the mouth</p> Signup and view all the answers

    Which type of teeth are pointy to tear up food?

    <p>Cuspids (Canines)</p> Signup and view all the answers

    What is the function of salivary amylase?

    <p>Initiates the breakdown of carbohydrates</p> Signup and view all the answers

    In case of sympathetic stimulation, what happens to saliva production?

    <p>It decreases</p> Signup and view all the answers

    Where is the Pulp cavity located within a tooth?

    <p>Contains nerves and blood vessels</p> Signup and view all the answers

    Which part of the throat handles only air and not food?

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

    Which of the following substances does pancreatic juice primarily digest?

    <p>Carbohydrates, proteins, and fats</p> Signup and view all the answers

    What is the primary role of the gallbladder in the digestive system?

    <p>To store, concentrate, and propel bile into the duodenum</p> Signup and view all the answers

    What is the primary mechanism by which the body absorbs carbohydrates?

    <p>Breaking down polysaccharides into monosaccharides</p> Signup and view all the answers

    Where is most protein digestion and absorption believed to occur?

    <p>In the small intestine, especially the jejunum</p> Signup and view all the answers

    What is the primary role of pancreatic lipase in the digestion of lipids?

    <p>To break down triglycerides into free fatty acids and monoglycerides</p> Signup and view all the answers

    What is the main function of the sodium-potassium pump in the absorption of minerals?

    <p>To actively transport minerals across the intestinal epithelium</p> Signup and view all the answers

    Where does most absorption take place in the digestive system?

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

    Which hormone initiates peristalsis to move chyme through the intestine?

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

    What is the role of segmentation in digestion?

    <p>Mixing chyme with digestive juices</p> Signup and view all the answers

    Which part of the small intestine contains circular folds, villi, and microvilli to enhance absorption?

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

    How long does it take for all food to leave the small intestine?

    <p>3-5 hours</p> Signup and view all the answers

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