Digestive System Chapter 23.1 Quiz
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Questions and Answers

What type of epithelium is found in the mouth and esophagus?

  • Pseudostratified columnar
  • Keratinized stratified squamous (correct)
  • Simple columnar
  • Simple squamous

    • Which layer always remains in a state of tension in the gastrointestinal tract?

  • Muscularis
  • Muscularis mucosa (correct)
  • Submucosa
  • Lamina propria

    • Which digestive organ is responsible for the production of bile?

  • Gallbladder
  • Pancreas
  • Salivary glands
  • Liver (correct)

    • What type of muscle is responsible for peristalsis in the small intestine?

    <p>Smooth muscle</p> Signup and view all the answers

    What is the main function of goblet cells in the gastrointestinal tract?

    <p>Produce mucus</p> Signup and view all the answers

    Which layer contains a collection of nerves known as the submucosal plexus?

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

    What is the primary function of chemical digestion?

    <p>Breaking down complex food molecules into building blocks</p> Signup and view all the answers

    What triggers the release of digestive juices in a short reflex?

    <p>Expansion of the stomach</p> Signup and view all the answers

    Which hormone stimulates the release of gastric acid?

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

    What is the function of the uvula in the mouth?

    <p>To prevent food from entering the nasal cavity</p> Signup and view all the answers

    Which organ primarily absorbs nutrients into the bloodstream or lipids into the lymphatic system?

    <p>Small intestine</p> Signup and view all the answers

    What type of control activates glands and muscles based on signals like expansion of the stomach and type of nutrient?

    <p>Neural control</p> Signup and view all the answers

    What is the primary function of the lower esophageal sphincter?

    <p>To control food entering the stomach and prevent acid reflux</p> Signup and view all the answers

    How long does the process of swallowing (deglutition) take for solid food?

    <p>4-8 seconds</p> Signup and view all the answers

    Which part of the stomach is responsible for storing undigested food and gases?

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

    What is the term used to describe the folds in the stomach when it is empty?

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

    Which muscle in the stomach is responsible for churning and mixing food?

    <p>Oblique muscle</p> Signup and view all the answers

    Does a person's body weight correlate with the size of their stomach?

    <p>No, body weight does not correlate with stomach size</p> Signup and view all the answers

    What is the primary function of the serosa layer of the stomach?

    <p>To provide a smooth, lubricating surface for the stomach to move against the abdominal wall</p> Signup and view all the answers

    What is the main role of the enteric nervous system in the digestive process?

    <p>To control the overall motility of the gastrointestinal tract</p> Signup and view all the answers

    What is the function of the parasympathetic nervous system in relation to the digestive process?

    <p>To increase gastrointestinal secretions and motility</p> Signup and view all the answers

    What is the primary purpose of the hepatic portal system in the digestive process?

    <p>To transport protein and carbohydrate from the intestines to the liver</p> Signup and view all the answers

    What is the main function of the peritoneum in relation to the digestive organs?

    <p>To hold the digestive organs in their proper anatomical positions</p> Signup and view all the answers

    What is the primary role of the mouth in the digestive process?

    <p>To initiate the chemical breakdown of carbohydrates and lipids</p> Signup and view all the answers

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

    <p>To mix food with gastric juices and begin chemical breakdown of proteins</p> Signup and view all the answers

    Which of the following is not a function of the small intestine?

    <p>Producing bile salts to emulsify lipids</p> Signup and view all the answers

    What is the role of the pancreas in the digestive process?

    <p>To produce digestive enzymes and bicarbonate</p> Signup and view all the answers

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

    <p>To store, concentrate, and release bile</p> Signup and view all the answers

    What is the purpose of mechanical digestion in the digestive process?

    <p>To expose a larger surface area to digestive juices</p> Signup and view all the answers

    What is the last voluntary act in the swallowing process until defecation?

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

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