PATHOLOGY MCQ
RESPIRATORY SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Alveoli
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Trachea
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Pharynx
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All of these
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Detailed explanation-1: -Alveoli: Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. Bronchioles: Small branches of the bronchial tubes that lead to the alveoli. Capillaries: Blood vessels in the alveoli walls that move oxygen and carbon dioxide.
Detailed explanation-2: -They are thin, squamous, and flat epithelial lining cells that form the structure of the alveoli. They have long cytoplasmic extensions that cover beyond 95% of the alveolar surface. The thin lining enables a fast diffusion of gas exchange between the air in the alveoli and the blood in the surrounding capillaries.
Detailed explanation-3: -Inside your lungs, the bronchial tubes branch into thousands of thinner tubes called bronchioles. The bronchioles end in clusters of tiny air sacs called alveoli.