Solved UPSC CDS/OTA Question
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Q · Respiratory System Medium · 45s
Which of the following statements is correct about alveoli? 1. They are lined with a single layer of squamous epithelium. 2. They are richly supplied with blood capillaries. 3. Surfactant produced by alveolar cells reduces surface tension. Select the correct answer:
TopicRespiratory System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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All are correct. Surfactant prevents alveolar collapse.
Final Answer: Option D - 1, 2 and 3