Alveola pulmonară este unitatea structurală și funcțională a plămânului reprezentată de o cavitate mică din plămâni, înconjurată de capilare arteriale și venoase. Alveolele pulmonare se găsesc la nivelul pereților ductelor alveolare, care continuă bronhiola respiratorie. Împreună formează acinul pulmonar, unitatea ...

There are three major types of alveolar cell. Two types are pneumocytes or pneumonocytes known as type I and type II cells found in the alveolar wall, and a large phagocytic cell known as an alveolar macrophage that moves about in the lumens of the alveoli, and in the connective tissue between them. Type I cells, also called type I pneumocytes ...

There are three major cell types in the alveolar wall (pneumocytes): Type I (Squamous Alveolar) cells that form the structure of an alveolar wall; Type II (Great Alveolar) cells that secrete pulmonary surfactant to lower the surface tension of water and allows the membrane to separate, therefore increasing its capability to exchange gases.

2025年1月27日 · They form clusters known as alveolar sacs, which branch out from the bronchioles in the lower respiratory tract. These sacs are found deep inside the lungs, embedded within the lung tissue , and are positioned near capillary networks to …

Great alveolar cells secrete pulmonary surfactant to lower the surface tension of water to maintain the lungs elastic recoil. Insufficient pulmonary surfactant in the alveoli can contribute to the collapse of a lung. Alveolar dead space occurs when an alveolus can’t participate in gas exchange due to damage, injury, scarring, or infection.

The alveoli are located in the alveolar sacs of the lungs in the pulmonary lobules of the respiratory zone. They are more numerous in the blind-ended alveolar sacs. Respiratory bronchioles lead into alveolar ducts which are deeply lined with alveoli. Each respiratory bronchiole gives rise to between two and eleven alveolar ducts.

Another type of cell, known as an alveolar macrophage, resides on the internal surfaces of the air cavities of the alveoli, the alveolar ducts, and the bronchioles. They are mobile scavengers that serve to engulf foreign particles in the lungs, such as dust, bacteria , carbon particles, and blood cells from injuries.

El alvéolo pulmonar es un saco de aproximadamente 0,2 a 0,5 mm de diámetro. Estos alvéolos se encuentran al final de las vías aéreas pulmonares. A veces, la estructura de los alvéolos es comparada con la de una frambuesa o un racimo de uvas.

2023年11月29日 · Printre cele mai comune afectiuni se numără emfizemul pulmonar, frecvent intalnit la fumatori, care poate conduce la deteriorarea alveolelor si poate afecta eficienta respiratiei. In acest articol, veti afla informatii despre modul in care functioneaza aceste structuri microscopice si care sunt afectiunile asociate acestora.

2021年7月6日 · Los alvéolos pulmonares son los miles de estructuras microscópicas que se encuentran en los pulmones, en los extremos de otras estructuras conocidas como bronquíolos. Funcionan en el intercambio gaseoso entre el aire inspirado y la sangre que circula por los capilares sanguíneos que están en las delgadas paredes que les dan forma.