The second trimester sees the beginning of surfactant secretion, an important chemical that prevents the alveoli of the lungs from collapsing.

Name: The second trimester sees the beginning of surfactant secretion, an important chemical that prevents the alveoli of the lungs from collapsing.
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Surfactant production begins in the second trimester, around 24 weeks of gestation, and is crucial for reducing surface tension in the alveoli, preventing their collapse.

The Second Trimester Sees the Beginning of Surfactant Secretion, an Important