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Which of the following is called the functional unit of the lungs?
  • a)
    Trachea
  • b)
    Bronchus
  • c)
    Bronchiole
  • d)
    Alveoli
  • e)
    None of the above/More than one of the above
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is called the functional unit of the lungs?a)Tr...
Alveoli is the functional unit of the human lungs.
Alveoli
  • The alveoli are the small balloon-like structures present in the lungs. The walls of the alveoli consist of extensive network of blood vessels. Each lung contains 300−350 million alveoli, making it a total of approximately 700 million in both the lungs. The alveolar surface when spread out covers about 80 m2 area. This large surface area makes the gaseous exchange more efficient.
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Which of the following is called the functional unit of the lungs?a)Tr...
Alveoli is the functional unit of the human lungs.
Alveoli
  • The alveoli are the small balloon-like structures present in the lungs. The walls of the alveoli consist of extensive network of blood vessels. Each lung contains 300−350 million alveoli, making it a total of approximately 700 million in both the lungs. The alveolar surface when spread out covers about 80 m2 area. This large surface area makes the gaseous exchange more efficient.
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Which of the following is called the functional unit of the lungs?a)Tracheab)Bronchusc)Bronchioled)Alveolie)None of the above/More than one of the aboveCorrect answer is option 'D'. Can you explain this answer?
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