Surfactant synthesis stas after about: (A) 26 weeks of foetal life, (B) 20 weeks of foetal life, (C) 30 weeks of foetal life, (D) 18 weeks of foetal life
Answer is B. Surfactant is synthesized and secreted by Type II alveolar epithelial cells, also called pneumocytes, which differentiate between 24 and 34 weeks of gestation in the human Ref: guyton and hall textbook of medical physiology 12 edition page number:312,313,314