Respiratory System Quiz
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Questions and Answers

What is the main function of the respiratory system?

  • Gas exchange involving O2 and CO2 (correct)
  • Production of hormones
  • Digestion of food particles
  • Regulation of blood pressure

    • How many lobes does the left lung have?

  • 1 lobe
  • 3 lobes
  • 4 lobes
  • 2 lobes (correct)

    • What occurs during inhalation?

  • Air is expelled from the lungs
  • The diaphragm contracts and air is drawn in (correct)
  • The diaphragm relaxes and moves up
  • The bronchi narrow and restrict airflow

    • Which structure separates the thoracic and abdominal cavities?

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

    What is the primary site for gas exchange in the respiratory system?

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

    Which statement is true about the diaphragm during exhalation?

    <p>The diaphragm relaxes and moves up</p> Signup and view all the answers

    Which of the following describes the flow of air during inhalation?

    <p>Air enters through the trachea and into the lungs</p> Signup and view all the answers

    What best describes the structure of the lungs?

    <p>Sponge-like organs in the thoracic cavity</p> Signup and view all the answers

    Which pathway correctly describes where air travels from the trachea?

    <p>Trachea → Bronchi → Alveoli</p> Signup and view all the answers

    What primarily differentiates the right lung from the left lung in terms of anatomy?

    <p>The right lung is larger and has three lobes.</p> Signup and view all the answers

    Which of the following statements accurately reflects a component of the respiratory system?

    <p>The bronchi are larger than the alveoli.</p> Signup and view all the answers

    What occurs in the alveoli during the respiratory cycle?

    <p>Gas exchange occurs between oxygen and carbon dioxide.</p> Signup and view all the answers

    Which process correctly describes what happens during exhalation?

    <p>The diaphragm relaxes and air is pushed out of the lungs.</p> Signup and view all the answers

    What is primarily responsible for the movement of air in and out of the lungs?

    <p>The pressure change caused by the diaphragm.</p> Signup and view all the answers

    Which statement best describes the conducting airways in the respiratory system?

    <p>They transport air from the trachea to the alveoli.</p> Signup and view all the answers

    What distinguishes bronchi from bronchioles in the respiratory system?

    <p>Bronchi are larger and consist of cartilage, while bronchioles are smaller and lack cartilage.</p> Signup and view all the answers

    How does the structure of the diaphragm contribute to its function in breathing?

    <p>Its contraction increases thoracic cavity volume.</p> Signup and view all the answers

    What happens to carbon dioxide during the process of exhalation?

    <p>It is expelled from the lungs into the atmosphere.</p> Signup and view all the answers

    How many lobes does the right lung have?

    <p>3</p> Signup and view all the answers

    Carbon dioxide is inhaled and oxygen is exhaled.

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

    What is the primary role of the diaphragm in respiration?

    <p>To contract and relax to facilitate inhalation and exhalation</p> Signup and view all the answers

    The right lung contains ______ lobes.

    <p>3</p> Signup and view all the answers

    Match the following structures with their functions:

    <p>Alveoli = Sites of gas exchange Diaphragm = Muscle that separates thoracic and abdominal cavities Bronchi = Main passageways into the lungs Trachea = Windpipe that conducts air to bronchi</p> Signup and view all the answers

    What happens to the diaphragm during inhalation?

    <p>It contracts</p> Signup and view all the answers

    The lungs are located in the abdominal cavity.

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

    What is the role of alveoli in the respiratory system?

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

    Air travels from the trachea to the ______ before reaching the alveoli.

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

    What is the relationship between bronchi and bronchioles?

    <p>Bronchi divide into bronchioles</p> Signup and view all the answers

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