Development and histogenesis of human foetal lung in relation with gestational age

Histogenesis of Human Lung - Retrospective Fetal Autopsy Study.

“…Lungs have a dual origin. The larynx, trachea, bronchi, bronchioles and respiratory bronchioles lined by cuboidal epithelium arise from the foregut diverticulum and the remaining respiratory bronchioles, alveolar ducts, alveolar sacs and alveoli arise from adjacent mesenchyme [1]. The maturation phase of the lungs can be divided into 4 stages-(i)Pseudoglandular stage (6-16 weeks)-the developing lungs resembles exocrine glands.…”