A surfactant plays its role by:

Correct answer: C. Decreasing surface tension

  • A. No effect on surface tension
  • B. Increasing surface tension
  • C. Decreasing surface tension
  • D. None of these

Explanation

Pulmonary surfactant is essential for life as it lines the alveoli to lower surface tension, thereby preventing atelectasis during breathing. Surfactant is enriched with a relatively unique phospholipid, termed dipalmitoylphosphatidylcholine, and four surfactant-associated proteins, SP-A, SP-B, SP-C, and SP-D.

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