Gastric Secretion and Gastric Glands Anatomy
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Gastric Secretion and Gastric Glands Anatomy

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Questions and Answers

Which cells secrete mucus in the stomach mucosa?

  • Mucous neck cells (Goblet) (correct)
  • G cells
  • Chief cells
  • Oxyntic (parietal) cells

    • What is the primary role of chief cells in gastric glands?

  • Produce mucus
  • Secrete pepsinogen & enzymes (correct)
  • Produce somatostatin
  • Secrete HCl

    • Where does HCl secretion occur in the parietal cells of the gastric glands?

  • Within the G cells
  • In the cytoplasm
  • In the antrum
  • In the lumen of canaliculi (correct)

    • Which cells are responsible for secreting gastrin in the stomach mucosa?

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

    What is the main function of enterochromaffin like cells in the stomach mucosa?

    <p>Secrete histamine</p> Signup and view all the answers

    What is the purpose of the Na+-K+ ATPase pump in the gastric secretion?

    <p>To recycle K+ ions back into the cell</p> Signup and view all the answers

    Which of the following receptors is blocked by atropin?

    <p>Muscarinic M3 receptors</p> Signup and view all the answers

    What is the primary function of HCl in protein digestion?

    <p>To activate pepsinogen to pepsin</p> Signup and view all the answers

    What is the optimal pH range for pepsin activity?

    <p>pH 1.8-3.5</p> Signup and view all the answers

    What is the function of intrinsic factor in the gastric secretion?

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

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