Q. Regarding surfactant: (Solved)
1. infant respiratory distress syndrome can be adequately treated with administration of phospholipids alone
2. cigarette smokers have the same amount of surfactant as non-smokers
3. the phospholipid film is formed by tubular myelin
4. infant respiratory distress syndrome is caused by insufficient surfactant that prevents the alveoli from expanding at first inspiratory effort
5. formation of the phospholipid film is greatly facilitated by the carbohydrate in surfactant
- c. the phospholipid film is formed by tubular myelin