<prompt> Surfactant synthesis stas after about26 weeks of foetal life20 weeks of foetal life30 weeks of foetal life18 weeks of foetal life  <response>: 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 