Prof. Dr. Reda Mohammed Day Class Lecture Plan
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Questions and Answers

What is the main function of the respiratory system?

  • Filtering blood
  • Conducting air to the lung (correct)
  • Digesting food
  • Producing hormones for the body

    • Which of the following is NOT part of the respiratory (conducting) passages?

  • Bronchi
  • Nose
  • Trachea
  • Alveoli (correct)

    • Where is the vestibule located in the nasal cavity?

  • Behind the larynx
  • At the base of the skull
  • Anterior dilated part of the nose (correct)
  • Near the trachea

    • What is the main component of the wall of the vestibule in the nasal cavity?

    <p>Hyaline cartilage</p> Signup and view all the answers

    Which one of the following is NOT a function of the nasal cavity?

    <p>Gas exchange</p> Signup and view all the answers

    What type of epithelium lines the posterior part of the nasal cavity?

    <p>Respiratory epithelium</p> Signup and view all the answers

    What type of epithelium lines the Intra-Pulmonary Bronchi?

    <p>Pseudostratified columnar ciliated epithelium</p> Signup and view all the answers

    What cells secrete serous fluid in the Terminal Bronchioles?

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

    What type of cells are more numerous in the alveoli?

    <p>Type I Pneumocytes</p> Signup and view all the answers

    What is the composition of the Inter-alveolar Septum?

    <p>Connective tissue, phagocytic cells, and blood capillaries</p> Signup and view all the answers

    What is the lining of the Alveolar Sacs primarily composed of?

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

    What type of epithelium covers the middle and inferior conchae in the respiratory area of the nasal fossa?

    <p>Pseudostratified columnar ciliated epithelium with goblet cells</p> Signup and view all the answers

    Which area of the nasal fossa is covered by olfactory epithelium?

    <p>Superior concha</p> Signup and view all the answers

    What is the function of the trachealis muscle in the trachea?

    <p>To constrict the tracheal lumen during coughing and forced expiration</p> Signup and view all the answers

    Which type of cartilage forms the fibro-cartilaginous layer of the trachea?

    <p>Hyaline cartilage</p> Signup and view all the answers

    What is the composition of the lamina propria in the trachea?

    <p>Contains blood vessels, nerves, and an abundance of elastic fibers</p> Signup and view all the answers

    Which structure marks the beginning of the trachea?

    <p>Cricoid cartilage</p> Signup and view all the answers

    What is the function of surfactant in the alveoli?

    <p>To cover the surface of alveolar cells and prevent alveolar collapse</p> Signup and view all the answers

    Which type of cells are responsible for engulfing foreign particles like dust or carbon in the lung alveoli?

    <p>Dust Cells</p> Signup and view all the answers

    What forms the blood-air barrier for the exchange of gases in the lungs?

    <p>Cytoplasm of type I pneumocytes</p> Signup and view all the answers

    Which type of pneumocytes contain secretory granules with surfactant?

    <p>Type II Pneumocytes</p> Signup and view all the answers

    What are Heart Failure Cells responsible for engulfing in patients with heart failure?

    <p>Red Blood Corpuscles</p> Signup and view all the answers

    What is the function of pleural membranes in the respiratory system?

    <p>To cover the outer surface of the lungs and internal wall of the thoracic cavity</p> Signup and view all the answers

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