Respiratory System Parts Quiz by Prof. Ayoub Bazzaz
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Questions and Answers

What type of epithelium is found in the secondary bronchi?

  • Simple squamous epithelium
  • Simple low columnar epithelium (correct)
  • Simple ciliated cuboidal epithelium
  • Simple non-ciliated columnar epithelium

    • Which type of cells are found in the terminal bronchioles?

  • Simple non-ciliated low columnar or cuboidal cells
  • Simple ciliated cuboidal epithelium with goblet cells
  • Simple columnar epithelium with Clara cells
  • Simple squamous (Type-I) and low cuboidal epithelium cells (Type-II) (correct)

    • What is the main function of the Type-II cells found in the alveoli?

  • Regulate blood flow
  • Produce surfactant (correct)
  • Provide structural support
  • Facilitate gas exchange

    • Which type of bronchi have segments of hyaline cartilage?

    <p>Primary bronchi</p> Signup and view all the answers

    What is the main function of the Clara cells found in the bronchioles?

    <p>Regulate mucus production</p> Signup and view all the answers

    What are the tiny air sacs in the lungs called?

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

    Which of the following structures is lined with pseudostratified ciliated columnar epithelium?

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

    What is the function of the smooth muscle fibers surrounding the trachea and bronchi?

    <p>To control the diameter and length of the airways</p> Signup and view all the answers

    Which of the following structures connect the trachea to the lungs?

    <p>Bronchial tubes</p> Signup and view all the answers

    What is the primary function of the diaphragm in the respiratory system?

    <p>To facilitate the movement of air into and out of the lungs</p> Signup and view all the answers

    Which of the following structures has a layer of C-shaped hyaline cartilage forming its wall?

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

    What is the primary function of the alveoli?

    <p>To facilitate gas exchange between air and blood</p> Signup and view all the answers

    Which of the following best describes the structure of the bronchioles?

    <p>They have a layer of smooth muscle surrounding their lumens</p> Signup and view all the answers

    What is the function of the Clara cells found in the respiratory bronchioles?

    <p>To secrete surfactant for reducing surface tension</p> Signup and view all the answers

    Approximately how many alveoli are present in a typical pair of human lungs?

    <p>700 million</p> Signup and view all the answers

    What is the role of the smooth muscle surrounding the terminal bronchioles?

    <p>To facilitate the movement of air in and out of the lungs</p> Signup and view all the answers

    What is the approximate average diameter of an adult alveolus?

    <p>200 micrometers</p> Signup and view all the answers

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