L1 Functions of Respiratory System and Respiratory Cycle
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Questions and Answers

What is the primary function of the respiratory system related to voice production?

  • Controls the sense of smell
  • Regulates blood pressure
  • Filters foreign particles from the air
  • Produces sound through vocal cord vibration (correct)
  • Where are the taste receptors located in the respiratory system?

  • In the olfactory membrane
  • In the trachea
  • In the nasal cavity
  • In the pharynx (correct)
  • Which substance is secreted by the respiratory system along with surfactant and prostaglandins?

  • Angiotensin converting enzyme (ACE) (correct)
  • Cortisol
  • Adrenaline
  • Histamine
  • How are particles larger than 10 µ removed from the air in the respiratory system?

    <p>Through sneezing reflex</p> Signup and view all the answers

    Which mechanism prevents foreign particles from reaching the alveoli in the respiratory system?

    <p>Turbulent precipitation</p> Signup and view all the answers

    What role do the conchae (nasal turbinate) play in the respiratory system?

    <p>Directing air movement</p> Signup and view all the answers

    Which component of bronchial secretion helps in defense within the respiratory system?

    <p>Immunoglobulin IgA</p> Signup and view all the answers

    'Turbulent precipitation' in nasal passageways aids in entrapping particles suspended in the air. How are these particles eventually removed by the respiratory system?

    <ul> <li>By ciliary action to transport them to be swallowed</li> </ul> Signup and view all the answers

    What is the function of angiotensin-converting enzyme (ACE) inhibitors mentioned in the text?

    <p>Relax veins and arteries to lower blood pressure</p> Signup and view all the answers

    Which part of the lower respiratory tract is responsible for gas exchange in the lungs?

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

    How many times is the lower respiratory tract divided to form the conducting zone?

    <p>16 times</p> Signup and view all the answers

    What is the functional unit of the lung according to the provided text?

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

    Which muscle is primarily responsible for the process of inspiration during breathing?

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

    What is the main function of the respiratory system related to blood?

    <p>CO2 excretion regulation</p> Signup and view all the answers

    Which part of the lower respiratory tract acts as a passageway for air to reach the alveoli?

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

    In which generation does the trachea fall in the lower respiratory tract division mentioned?

    <p>0th generation</p> Signup and view all the answers

    What percentage of heat loss at rest is regulated by the respiratory system?

    <p>*4%</p> Signup and view all the answers

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