Lecture 16
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Questions and Answers

What is the type of muscle present in the Muscularis mucosae?

  • Voluntary muscle
  • Cardiac muscle
  • Smooth muscle (correct)
  • Skeletal muscle
  • What is the function of the Myenteric plexus in the GIT?

  • Regulation of digestion
  • Regulation of nerve conduction
  • Regulation of muscle contraction (correct)
  • Regulation of blood flow
  • What is the term for the transition points in the GIT mucosa?

  • Mucosal transition zones (correct)
  • Abrupt transition points
  • GIT mucosal sites
  • Gastrointestinal junctions
  • What is the type of tissue present in the Submucosa?

    <p>Loose collagenous connective tissue</p> Signup and view all the answers

    What is the name of the plexus of nerves present in the Submucosa?

    <p>Plexus of Meissner</p> Signup and view all the answers

    What is the outermost layer of the GIT wall?

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

    What is the role of Peyer's patches in the GI tract?

    <p>To sample the contents of the GI tract</p> Signup and view all the answers

    What type of epithelium lines the intestinal villi?

    <p>Simple columnar epithelium</p> Signup and view all the answers

    What is the function of goblet cells in the small intestine?

    <p>To produce mucin for lubrication and protection</p> Signup and view all the answers

    Where are Paneth cells typically located in the small intestine?

    <p>At the base of the crypts</p> Signup and view all the answers

    What is the main function of enterocytes in the small intestine?

    <p>To absorb nutrients</p> Signup and view all the answers

    What is the name of the base of a villus that is closest to the submucosa?

    <p>Crypt of Lieberkuhn</p> Signup and view all the answers

    What is the name of the short section of the stomach that connects the antrum to the initial segment of the small intestine?

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

    What marks the sharp transition from the glandular mucosa of the stomach to the villous mucosa of the duodenum?

    <p>Pyloric sphincter</p> Signup and view all the answers

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

    <p>To neutralize gastric acid and pepsin</p> Signup and view all the answers

    What is unique to the duodenum?

    <p>Coiled branched tubular Brunner's glands</p> Signup and view all the answers

    What is the characteristic of the mucosa in the small intestine?

    <p>Villous mucosa</p> Signup and view all the answers

    What is characteristic of the ileum?

    <p>Short villi and abundant Peyer's patches</p> Signup and view all the answers

    What is the characteristic feature of the recto-anal junction?

    <p>Transition from columnar to stratified squamous epithelium</p> Signup and view all the answers

    What type of epithelium is present in the esophagus?

    <p>Stratified squamous epithelium</p> Signup and view all the answers

    What is the function of the main blood vessels and ducts in the liver?

    <p>To transport blood and bile to and from the liver</p> Signup and view all the answers

    What is the name of the framework that contains the bile ducts and blood vessels in the liver?

    <p>Portal tracts</p> Signup and view all the answers

    What type of epithelium is present in the anus?

    <p>Stratified squamous epithelium</p> Signup and view all the answers

    What is the function of the sinusoids in the liver?

    <p>To allow blood flow through the liver</p> Signup and view all the answers

    What type of cells line the sinusoids in the liver?

    <p>Cells of the macrophage system</p> Signup and view all the answers

    What is the shape of the hepatic lobule?

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

    What is the purpose of the portal tract?

    <p>To distribute oxygen and nutrients to the liver cells</p> Signup and view all the answers

    What is the location of the bile ductules in the portal tract?

    <p>At the periphery of the tract</p> Signup and view all the answers

    What is the central structure of the hepatic lobule?

    <p>Terminal hepatic venule</p> Signup and view all the answers

    What is the direction of blood flow in the hepatic lobule?

    <p>From the portal tract to the central vein</p> Signup and view all the answers

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