Digestive System Anatomy Basics
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Questions and Answers

What is the basic histological organization of the gastrointestinal (GI) tract mucosa?

  • An epithelial cell layer supported by a thick layer of connective tissue
  • An epithelial cell layer supported by a thin layer of connective tissue known as the lamina propria (correct)
  • A muscular layer composed of smooth muscle cells
  • An outer longitudinal layer composed of connective tissue

    • Which organ is considered an accessory structure of the digestive system?

  • Small intestine
  • Liver (correct)
  • Large intestine
  • Stomach

    • What is the main function of the muscularis externa in the gastrointestinal (GI) tract?

  • Production of digestive enzymes
  • Absorption of nutrients
  • Secretion of mucus
  • Facilitation of peristalsis (correct)

    • Which part of the gastrointestinal (GI) tract contains an inner circular layer and outer longitudinal layer of muscle?

    <p>Muscularis externa</p> Signup and view all the answers

    What is the role of the submucosa in the gastrointestinal (GI) tract?

    <p>Contains arteries, veins, lymphatics, and nerves</p> Signup and view all the answers

    True or false: The gastrointestinal tract (GI tract) is not a continuous tube extending through the ventral cavity from the mouth to the anus.

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

    True or false: The submucosa of the GI tract contains arteries, veins, lymphatics, and nerves.

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

    True or false: The muscularis externa of the GI tract is composed of two muscle layers, the inner longitudinal layer and outer circular layer.

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

    True or false: The serosa is a part of the basic histological organization of the mucosa of the GI tract.

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

    True or false: The mouth and oropharynx are considered as accessory structures of the digestive system.

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

    What are the two main groups of organs in the digestive system?

    <p>A. The gastrointestinal tract (GI tract) and B. Accessory structures</p> Signup and view all the answers

    What are the components of the mucosa that surrounds the lumen of the GI tract?

    <p>An epithelial cell layer supported by a thin layer of connective tissue known as the lamina propria</p> Signup and view all the answers

    What is the specific movement that the two muscle layers of the muscularis externa in the GI tract form the basis of?

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

    What does the submucosa of the GI tract contain?

    <p>Arteries, veins, lymphatics, and nerves</p> Signup and view all the answers

    Name one organ included in the accessory structures of the digestive system.

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

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