File:Human lung inter-alveolar septum em01.jpg

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Human Lung Inter-alveolar Septum

Type I (AEC1) and type II (AEC2) alveolar epithelial cell.

Lamellar bodies (LB) contain surfactant in type II cell.

Tight junctions (arrowheads) between type II cell and neighbouring type I cell extensions.

Collagen fibrils (col) are present in the interstitium (extracellular space).

Alv alveolar lumen, Cap capillary lumen, Endo capillary endothelial cell.

Transmission electron microscopy. Scale bar 2 µm

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Knudsen L & Ochs M. (2018). The micromechanics of lung alveoli: structure and function of surfactant and tissue components. Histochem. Cell Biol. , 150, 661-676. PMID: 30390118 DOI.


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Cite this page: Hill, M.A. (2024, June 15) Embryology Human lung inter-alveolar septum em01.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current17:37, 23 February 2019Thumbnail for version as of 17:37, 23 February 2019785 × 589 (168 KB)Z8600021 (talk | contribs)==Human Lung Inter-alveolar Septum== Type I (AEC1) and type II (AEC2) alveolar epithelial cell. Note surfactant-storing lamellar bodies (LB) in type II cell. Arrowheads mark tight junctions between type II cell and neighbouring type I cell extension...

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