Fetal lung (histological slide)

• Fetal lungs contain significantly fewer alveoli compared to adult-type lungs, in some places they resemble a gland,
• the base of the epithelium originates from the endoderm of the foregut ,
• the basis of bronchioles and alveoli are terminal sacs (they are formed by the gradual division of bronchial buds),
• the cartilage base of the bronchi (arranged as a ring of clustered cells enveloped by the future perichondrium) and the vascular base originate fromthe mesenchyme.

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• Lung
• Lung (histological slide)

References

• MUDR. EIS, Václav – MUDR. JELÍNEK, Štěpán – MUDR. ŠPAČEK, Martin. Histopatologický atlas [online]. ©2006. [cit. 15.04.2010]. <http://histologie.lf3.cuni.cz/histologie/atlas/index.htm>.

• JUNQUIERA, L. Carlos – CARNEIRO, José – KELLEY, Robert O.. Základy histologie. 1. edition. Jinočany : H & H 1997, 1997. Chapter 502. ISBN 80-85787-37-7.