Anatomy of Stomach: Pyloric Glands and Gastric Glands
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Questions and Answers

What is the main function of peptidases in succus entericus?

  • Convert triglycerides into fatty acids
  • Convert amino acids into peptides
  • Convert monosaccharides into disaccharides
  • Convert peptides into amino acids (correct)

    • What is the role of lactase, sucrase, and maltase in the small intestine?

  • Convert disaccharides into monosaccharides (correct)
  • Convert peptides into amino acids
  • Convert amino acids into peptides
  • Convert glucose into glycogen

    • What is the function of intestinal lipase in the small intestine?

  • Convert disaccharides into monosaccharides
  • Convert triglycerides into fatty acids and glycerol (correct)
  • Convert monosaccharides into disaccharides
  • Convert peptides into amino acids

    • What is the role of mucus in the small intestine?

    <p>To protect the intestinal wall from acid chyme</p> Signup and view all the answers

    What is the function of defensins in the small intestine?

    <p>To kill phagocytosed bacteria</p> Signup and view all the answers

    What is the role of intrinsic factor in the small intestine?

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

    What is the primary function of gastrin, a hormone secreted by G-cells?

    <p>Regulation of gastric secretion</p> Signup and view all the answers

    Which type of cell is responsible for secreting intrinsic factor, necessary for B12 absorption?

    <p>Parietal cells</p> Signup and view all the answers

    What is the main product secreted by chief cells in the gastric glands?

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

    Which type of cell is located in the superior 1/3 of the gastric glands?

    <p>Mucous neck cells</p> Signup and view all the answers

    What is the name of the structure where the gastric glands open into the stomach cavity?

    <p>Gastric pits</p> Signup and view all the answers

    Where are G-cells, which secrete gastrin, located?

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

    What is the approximate height of the intestinal villi?

    <p>1 mm</p> Signup and view all the answers

    What type of cells line the intestinal villi and glands?

    <p>Columnar cells</p> Signup and view all the answers

    What is the function of the microvilli in the intestinal villi?

    <p>To increase the surface area of the mucous membrane</p> Signup and view all the answers

    What is the main function of the enterocytes in the intestinal villi?

    <p>To secrete enzymes for digestion</p> Signup and view all the answers

    Where do the intestinal glands open into?

    <p>The lumen of the intestine</p> Signup and view all the answers

    What is the name of the central channel within each villus that opens into lymphatic vessels?

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

    What is the average lifespan of a red blood cell?

    <p>120 days</p> Signup and view all the answers

    What type of hormones are catabolized by the liver?

    <p>Peptide hormones</p> Signup and view all the answers

    What is the purpose of reticuloendothelial cells in the liver?

    <p>To play a defensive role in the body</p> Signup and view all the answers

    How do reticuloendothelial cells of the liver remove foreign bodies?

    <p>Through phagocytosis</p> Signup and view all the answers

    What is the result of detoxification in the liver?

    <p>Removal of toxic property of harmful substances</p> Signup and view all the answers

    What is the fate of fat-soluble drugs in the liver?

    <p>They are converted into water-soluble substances</p> Signup and view all the answers

    What is the primary function of bile salts in the digestion process?

    <p>To emulsify fats and make them soluble in water</p> Signup and view all the answers

    What percentage of bile salts from the intestine are transported to the liver through enterohepatic circulation?

    <p>90% to 95%</p> Signup and view all the answers

    What is the result of unemulsified fat in the intestine?

    <p>It is eliminated in feces</p> Signup and view all the answers

    What is the term for the transport of substances from the small intestine to the liver through the portal vein?

    <p>Enterohepatic circulation</p> Signup and view all the answers

    What is formed when bile acids combine with sodium or potassium ions?

    <p>Sodium or potassium glycocholate and sodium or potassium taurocholate</p> Signup and view all the answers

    What is the role of bile salts in reducing the surface tension of fats?

    <p>Emulsifying fats through detergent action</p> Signup and view all the answers

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