Digestive System Functions Quiz
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Questions and Answers

What is the function of the stomach in the digestive system?

  • Absorb residual water and electrolytes
  • Produce bile salts for digestion
  • Neutralize acidic chyme
  • Mix food with chyme (correct)

    • Which organ releases intrinsic factor for vitamin B12 absorption in the small intestine?

  • Gallbladder
  • Pancreas
  • Liver
  • Stomach (correct)

    • What is the primary function of the small intestine?

  • Mixing chyme with digestive juices
  • Produce bile salts
  • Absorb macro and micro nutrients (correct)
  • Further breakdown of food residue

    • Which accessory organ produces bile salts to emulsify lipids for digestion?

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

    What is the last voluntary act before defecation in the digestive process?

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

    Which process exposes a larger surface area of food to digestive juices?

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

    What is the primary function of the tongue?

    <p>To facilitate dynamic movement and taste perception</p> Signup and view all the answers

    Which of the following statements about saliva is incorrect?

    <p>Saliva production increases during sleep.</p> Signup and view all the answers

    What is the function of the epiglottis?

    <p>To prevent food from entering the trachea during swallowing</p> Signup and view all the answers

    Which of the following is NOT a type of tooth?

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

    What is the function of the pharynx?

    <p>To handle the passage of both food and air through involuntary muscle contractions</p> Signup and view all the answers

    Which part of the tooth contains nerves and blood vessels?

    <p>Pulp cavity</p> Signup and view all the answers

    Which of the following statements about the small intestine is correct?

    <p>It contains the duodenum, jejunum, and ileum regions.</p> Signup and view all the answers

    What is the function of the duodenal glands?

    <p>To secrete bicarbonate-rich alkaline mucous.</p> Signup and view all the answers

    Which of the following statements about peristalsis is correct?

    <p>It is the process that moves chyme through the small intestine, initiated by the hormone motilin.</p> Signup and view all the answers

    Which region of the small intestine is the longest and has the most mucosal folds?

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

    What is the purpose of segmentation in the small intestine?

    <p>To mix chyme with digestive juices and force particles toward the mucosa for absorption.</p> Signup and view all the answers

    What is the primary function of the gastric phase during digestion?

    <p>To prepare the stomach for food entry by stretching and lowering pH</p> Signup and view all the answers

    Which of the following is NOT part of the mucosal barrier that protects the stomach from self-digestion?

    <p>Presence of stomach-digesting enzymes</p> Signup and view all the answers

    What are the two main causes of stomach ulcers?

    <p><strong>NSAID use and <em>H. pylori</em> bacterial infection</strong></p> Signup and view all the answers

    Which of the following statements about stomach emptying is correct?

    <p>Carbohydrates empty fastest, followed by high-protein foods</p> Signup and view all the answers

    What is the significance of intrinsic factor produced by the stomach?

    <p><strong>It is the one function essential for life, producing red blood cells and maintaining neurological function</strong></p> Signup and view all the answers

    Which of the following statements about the mechanical digestion in the stomach is correct?

    <p><strong>Gentle and intense waves move from the body toward the pylorus, forcing small amounts of chyme into the duodenum</strong></p> Signup and view all the answers

    Which of the following is NOT a function of bile secreted by the liver?

    <p>Digestion of proteins in the small intestine</p> Signup and view all the answers

    What is the primary reason for the production of methane gas in the chemical digestive process?

    <p>Breakdown of indigestible sugars by bacteria</p> Signup and view all the answers

    Which of the following statements about the Valsalva maneuver is correct?

    <p>It is a voluntary procedure to increase intra-abdominal pressure for defecation</p> Signup and view all the answers

    What happens if defecation is delayed for too long?

    <p>More water is absorbed, causing feces to become firmer and leading to constipation</p> Signup and view all the answers

    Which organ is responsible for producing both bile and digestive enzymes?

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

    What is the primary function of hepatocytes in the liver?

    <p>Processing of nutrients, drugs, and toxins</p> Signup and view all the answers

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