Biology · Human Respiration
The efficiency of gas exchange in the alveoli is primarily attributed to which structural characteristic?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Large surface area combined with a thin alveolar-capillary barrier✓
- 2A robust elastic network to maintain alveolar shape
- 3Abundance of mucus-secreting cells
- 4Thick epithelial lining to protect from pathogens
Correct answer
Large surface area combined with a thin alveolar-capillary barrier
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