Pulmonary alveolus - Wikipedia
A pulmonary alveolus (pl.: alveoli, from Latin alveolus, "little cavity"), also known as an air sac or air space, is one of millions of hollow, distensible cup-shaped cavities in the lungs where pulmonary gas exchange takes place. [1] Oxygen is exchanged for carbon dioxide at the blood–air barrier between the alveolar air and the pulmonary capillary. [2] ...
Pneumocytes
Pneumocytes The surface epithelial cells of the alveoli, or pneumocytes, are of two types. The type I pneumocytes form part of the barrier across which gas exchange occurs.
Histology, Alveolar Cells - StatPearls - NCBI Bookshelf
2023年8月28日 · The cytoplasm within the leaflets contains cytoskeletal fibrils, microtubules, and membrane vesicles for transcellular transport. The fused basal laminae of the type I pneumocyte and the capillary endothelial cell can be appreciated when observed under EM. Type II cells are large and cuboidal.
Alveoli: Anatomy, function and clinical points | Kenhub
2023年10月30日 · Type I pneumocyte (squamous alveolar cells with thin membrane; allow gas exchange) Type II pneumocyte (repair alveolar epithelium, secrete pulmonary surfactant) Alveolar macrophages
Histology, Lung - StatPearls - NCBI Bookshelf
2023年5月1日 · Brush cells, occasionally referred to as type III pneumocyte cells are sparsely distributed in all areas of respiratory mucosa. Brush cells may be columnar, or flask-like and are identified by their short microvilli covered apical layer–resembling a push broom or …
Involvement of type II pneumocytes in the pathogenesis of chronic ...
2010年1月31日 · The further study should clarify if type II pneumocytes act as the primary or secondary role in the pathogenesis of COPD. There is a great need to define the valid strategies clarify type II pneumocyte dysfunctions in COPD and the …
Pneumocyte - an overview | ScienceDirect Topics
2011年2月7日 · Pneumocyte In subject area: Agricultural and Biological Sciences Third pneumocytes are alveolar macrophage cells (or dust cells) which are primary phagocytes of the inherent immune system near the pneumocytes at the major boundaries between the body and the outer world.
Respiratory: The Histology Guide - University of Leeds
Alveoli. The epithelium of the alveoli, contains two main types of cells: 1. type I pneumocytes: large flattened cells - (95% of the total alveolar area) which present a very thin diffusion barrier for gases.They are connected to each other by tight junctions.
Pneumocyte - an overview | ScienceDirect Topics
Pneumocyte In subject area: Biochemistry, Genetics and Molecular Biology The lungs' alveoli are highly vascularized small bags, made of thin wall pneumocytes, whose role is to ensure respiratory gas exchanges with the blood.
Alveolar epithelial type II cell: defender of the alveolus revisited ...
2001年1月15日 · As early as 1954, CC Macklin had postulated some of the most important functions of the great pneumocyte, ie the pneumocyte type II or alveolar epithelial type II (AE2) cell (Fig. 1) . Macklin presumed that these cells secrete material that provides low surface tension, enhances clearance of inhaled particles, is bacteriostatic, and helps ...
- 某些结果已被删除