Gr 9 NATURAL SCIENCES: CH 1.2 The respiratory system
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Questions and Answers

What happens to the diaphragm during inhalation?

  • It relaxes and moves upward
  • It contracts and moves downward (correct)
  • It disappears
  • It remains stationary

    • What is the primary function of the alveoli?

  • To store oxygen
  • To produce ATP
  • To filter out pollutants
  • To facilitate gaseous exchange (correct)

    • What is the by-product of cellular respiration?

  • Oxygen and glucose
  • Proteins and oxygen
  • ATP and proteins
  • Carbon dioxide and water (correct)

    • What is the common symptom of asthma?

    <p>Wheezing, coughing, and shortness of breath</p> Signup and view all the answers

    What is the primary cause of lung cancer?

    <p>Smoking and exposure to radon gas</p> Signup and view all the answers

    What is bronchitis?

    <p>Inflammation of the lining of the bronchial tubes</p> Signup and view all the answers

    What is the primary symptom of pneumonia?

    <p>All of the above</p> Signup and view all the answers

    What is tuberculosis?

    <p>A bacterium that affects the lungs and other organs</p> Signup and view all the answers

    What is the best way to protect the respiratory system?

    <p>Regular exercise and avoiding smoking</p> Signup and view all the answers

    What is the importance of understanding the respiratory system?

    <p>To maintain respiratory health and overall well-being</p> Signup and view all the answers

    What is the primary function of the respiratory system?

    <p>To supply oxygen to the body's cells and remove carbon dioxide</p> Signup and view all the answers

    What is the function of the nasal cavity?

    <p>To filter and trap dust and pathogens</p> Signup and view all the answers

    What is the purpose of the pharynx?

    <p>To connect the nasal cavity and mouth to the larynx and esophagus</p> Signup and view all the answers

    What is the trachea supported by?

    <p>C-shaped rings of cartilage</p> Signup and view all the answers

    What is the function of the bronchi?

    <p>To distribute air throughout the lungs</p> Signup and view all the answers

    What is the main function of the alveoli?

    <p>To facilitate the diffusion of oxygen into the blood and carbon dioxide out of the blood</p> Signup and view all the answers

    What is the diaphragm's role in breathing?

    <p>To contract and relax to change the volume of the thoracic cavity</p> Signup and view all the answers

    What is the thoracic cavity?

    <p>The space where the lungs are located</p> Signup and view all the answers

    What is the purpose of the cilia in the respiratory system?

    <p>To trap and expel foreign particles</p> Signup and view all the answers

    What is the primary function of the lungs?

    <p>To exchange oxygen and carbon dioxide</p> Signup and view all the answers

    What happens to the air in the nasal cavity?

    <p>It is warmed, moistened, and filtered</p> Signup and view all the answers

    What is the shape of the rings of cartilage in the trachea?

    <p>C-shaped</p> Signup and view all the answers

    What is the structure that resembles an inverted tree in the lungs?

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

    Where does gas exchange occur in the lungs?

    <p>In the alveoli surrounded by capillaries</p> Signup and view all the answers

    What is the role of the mucus and cilia in the trachea?

    <p>To trap and expel foreign particles</p> Signup and view all the answers

    During exhalation, what happens to the rib cage?

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

    What is the location of the lungs in the body?

    <p>In the thoracic cavity</p> Signup and view all the answers

    What is the role of the intercostal muscles during inhalation?

    <p>They contract</p> Signup and view all the answers

    Where does gaseous exchange occur in the body?

    <p>In the lungs and body tissues</p> Signup and view all the answers

    What is the function of the diaphragm?

    <p>To change the volume of the thoracic cavity</p> Signup and view all the answers

    What is the passageway for both air and food?

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

    What is the energy currency of cells?

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

    What is a common trigger of asthma attacks?

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

    What is the outcome of the exchange of gases in the alveoli?

    <p>Oxygen is added to the blood and carbon dioxide is removed</p> Signup and view all the answers

    What is the primary role of the bronchi?

    <p>To distribute air to the lungs</p> Signup and view all the answers

    What is the primary cause of lung cancer?

    <p>Smoking and radon gas</p> Signup and view all the answers

    What is the primary symptom of bronchitis?

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

    What is the primary cause of TB?

    <p>Bacterial infection</p> Signup and view all the answers

    What is the importance of understanding the respiratory system?

    <p>To maintain overall health and well-being</p> Signup and view all the answers

    What can help protect the respiratory system?

    <p>Regular exercise and good hygiene</p> Signup and view all the answers

    What increases the volume of the thoracic cavity during inhalation?

    <p>Contraction of the intercostal muscles</p> Signup and view all the answers

    What is the site of gaseous exchange in the body?

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

    What is the outcome of cellular respiration?

    <p>Production of ATP, carbon dioxide, and water</p> Signup and view all the answers

    What is the primary cause of lung cancer?

    <p>Smoking and exposure to radon gas</p> Signup and view all the answers

    What is the characteristic of asthma?

    <p>Inflammation and narrowing of the airways</p> Signup and view all the answers

    What is the role of the intercostal muscles during exhalation?

    <p>Relaxation and contraction of the rib cage</p> Signup and view all the answers

    What is the site of cellular respiration?

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

    What is the primary symptom of bronchitis?

    <p>Persistent coughing</p> Signup and view all the answers

    What is the infectious agent of tuberculosis?

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

    What is the outcome of gas exchange in the alveoli?

    <p>Oxygen diffuses into the capillaries and carbon dioxide diffuses out</p> Signup and view all the answers

    What is the primary purpose of the C-shaped rings of cartilage in the trachea?

    <p>To keep the trachea open</p> Signup and view all the answers

    What is the role of the bronchioles in the lungs?

    <p>To distribute air throughout the lungs</p> Signup and view all the answers

    What is the function of the mucus and cilia in the nasal cavity?

    <p>To filter the air entering the lungs</p> Signup and view all the answers

    What is the result of gas exchange in the alveoli?

    <p>Oxygen is added to the blood and carbon dioxide is removed</p> Signup and view all the answers

    What is the function of the pharynx in the respiratory system?

    <p>To serve as a passageway for both air and food</p> Signup and view all the answers

    What is the role of the diaphragm in breathing?

    <p>To contract and relax to change the volume of the thoracic cavity</p> Signup and view all the answers

    What is the location of the alveoli in the lungs?

    <p>At the end of the bronchioles</p> Signup and view all the answers

    What is the primary function of the lungs?

    <p>To supply oxygen to the body's cells and remove carbon dioxide</p> Signup and view all the answers

    What is the role of the nasal cavity in the respiratory system?

    <p>To warm and moisten the air entering the lungs</p> Signup and view all the answers

    What is the function of the bronchi in the respiratory system?

    <p>To distribute air to the lungs</p> Signup and view all the answers

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