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What is the primary function of surfactant in the lungs? (2020)

Practice Questions

Q1
What is the primary function of surfactant in the lungs? (2020)
  1. Increase oxygen absorption
  2. Reduce surface tension
  3. Facilitate gas exchange
  4. Enhance lung elasticity

Questions & Step-by-Step Solutions

What is the primary function of surfactant in the lungs? (2020)
  • Step 1: Understand that the lungs have tiny air sacs called alveoli.
  • Step 2: Know that alveoli need to stay open to help us breathe.
  • Step 3: Learn that surfactant is a special substance produced in the lungs.
  • Step 4: Realize that surfactant reduces surface tension in the alveoli.
  • Step 5: Understand that by reducing surface tension, surfactant prevents the alveoli from collapsing.
  • Step 6: Know that this makes it easier for the lungs to expand when we inhale.
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