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

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

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

What is the outermost layer of the GIT wall?

<p>Serosa (D)</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 (C)</p> Signup and view all the answers

What type of epithelium lines the intestinal villi?

<p>Simple columnar epithelium (B)</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 (C)</p> Signup and view all the answers

Where are Paneth cells typically located in the small intestine?

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

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

<p>To absorb nutrients (A)</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 (D)</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 (B)</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 (A)</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 (D)</p> Signup and view all the answers

What is unique to the duodenum?

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

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

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

What is characteristic of the ileum?

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

What type of epithelium is present in the esophagus?

<p>Stratified squamous epithelium (A)</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 (C)</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 (C)</p> Signup and view all the answers

What type of epithelium is present in the anus?

<p>Stratified squamous epithelium (A)</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 (B)</p> Signup and view all the answers

What type of cells line the sinusoids in the liver?

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

What is the shape of the hepatic lobule?

<p>Hexagonal (B)</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 (A)</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 (B)</p> Signup and view all the answers

What is the central structure of the hepatic lobule?

<p>Terminal hepatic venule (D)</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 (C)</p> Signup and view all the answers

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