Internal Respiration and Lung Anatomy Quiz
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Questions and Answers

Where does internal respiration occur?

  • Tissue at the cellular level (correct)
  • Lung borders
  • Systemic capillaries
  • Anatomical structures
  • Which part of the body is responsible for the physiological exchange of gases within the cell?

  • Musculoskeletal system
  • Pons
  • Medulla Oblongata
  • Cellular physiological process (correct)
  • Where does the apex of the lung rest in the chest area?

  • 6th rib
  • 3-4 cm above the clavicles (correct)
  • MCL
  • On the diaphragm
  • Which part of the brain is responsible for being the inspiratory center?

    <p>Medulla Oblongata</p> Signup and view all the answers

    Which nerve innervates the diaphragm, a muscle essential for breathing?

    <p>Phrenic nerve</p> Signup and view all the answers

    Which muscle is NOT considered an accessory muscle for breathing?

    <p>Biceps brachii</p> Signup and view all the answers

    What is the primary function of the respiratory system?

    <p>Exchanging oxygen and carbon dioxide through respiration</p> Signup and view all the answers

    Which muscle is primarily responsible for respiration?

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

    On which level does the physiological process of respiration occur?

    <p>External, internal, and cellular</p> Signup and view all the answers

    Which structures are contained in the mediastinum?

    <p>Heart and esophagus</p> Signup and view all the answers

    What is the function of the phrenic nerve in respiration?

    <p>Innervates the diaphragm for breathing</p> Signup and view all the answers

    Where does external respiration occur in the respiratory system?

    <p>Between alveoli and blood through alveolar-capillary membrane</p> Signup and view all the answers

    Which primary muscle is responsible for inspiration during normal breathing?

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

    What is the main stimulus for breathing under normal circumstances?

    <p>Rise in carbon dioxide levels</p> Signup and view all the answers

    Which part of the respiratory system usually experiences fibrosis with age?

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

    During pregnancy, what respiratory change occurs as the diaphragm rises?

    <p>Increased inspiratory volume</p> Signup and view all the answers

    Which condition results in a less effective increase in respiration compared to hypercapnia?

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

    What happens to the chest cavity during expiration?

    <p>Decreases in size</p> Signup and view all the answers

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