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Q.
Lack of pulmonary surfactant produces
Breathing and Exchange of Gases
Solution:
Surfactant is a liquid produced by the lungs that keeps the airways (called alveoli) open, making it possible for babies to breathe in air after delivery. It begins to be produced in the fetus at about 26 weeks of pregnancy.
When there is not enough surfactant, the tiny alveoli collapse with each breath. As the alveoli collapse, damaged cells collect in the airways and further affect breathing ability leading to the complication cslled Respiratory distress syndrome.
So, the correct option is 'Respiratory distress syndrome'.