General Science - Physics (Basics)
What is the role of surfactant in the alveoli?
What is the role of surfactant in the alveoli?
medium Q5 of 15
Step-by-Step Solution
Step 1: Understand surfactant function
Surfactant is a substance secreted in alveoli to reduce surface tension of fluid lining.Step 2: Analyze its effect on alveoli
By reducing surface tension, surfactant prevents alveoli from collapsing during exhalation.Final Answer:
Prevent alveoli collapse by reducing surface tension → Option DQuick Check:
Surfactant function = Prevent alveoli collapse ✅
Quick Trick: Surfactant keeps alveoli open for gas exchange.
Common Mistakes:
- Confusing surfactant with mucus or oxygen transport.
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