HISTOLOGICAL CHARACTERIZATION OF PNEUMOCYTES TYPE I AND PNEUMOCYTE TYPE II: A SUBJECT REVIEW | ||
| Basrah Journal of Veterinary Research | ||
| Article 5, Volume 20, Issue 1, June 2021, Pages 50-56 PDF (1.74 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.23975/bjvetr.2031.175855 | ||
| Authors | ||
| Aseel Kamil Hameed* 1; Jihad Ahmed2; Zainab Jawad3 | ||
| 1Basic Science Department., College of Dentistry, University of Basrah, Iraq | ||
| 2*Department of Pathology and poultry diseases, College of Veterinary Medicine, University of Basrah,Basrah, Iraq. | ||
| 3Department of Pathology and poultry diseases, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq. | ||
| Abstract | ||
| The alveoli regards as a specialized region of the distal parts of the lung, in conductive morphology to an efficient gas exchange. There were two types of epithelial cells that lined the alveoli. Type I pneumocyte (T1Pn) cells exhibited a broad, more flattened morphology and covered near 95% of the surface areas, while the cuboidal alveolar type II pneumocyte (T2Pn) lined the remainders of the alveolus. T1Pn cells provided gaseous exchanges interfaced with the endothelium, while T2Pn cells served as both progenitor of T1Pn cells and played an important role to maintain the homeostasis of the alveoli, also T2Pn secrete a surfactant proteins by specialized organelles inside it called lamellar bodies to the alveolar spaces, in order to maintains surface tensions and prevent alveolar collapses. | ||
| Keywords | ||
| Histology; Pneumocyte; Type I | ||
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