Search results
Results from the WOW.Com Content Network
An alveolus (plural: alveoli, from Latin alveus, "little cavity"), is an anatomical structure that has the form of a hollow cavity. Mainly found in the lung, the pulmonary alveoli are spherical outcroppings of the respiratory bronchioles and are the primary sites of gas exchange with the blood. Date: December 2007: Source: Own work using:
The alveoli are surrounded by a capillary bed. The type I pneumocytes allow gas exchange, while the type II pneumocytes produce surfactant to prevent the collapse of the alveolus. Date
Almost any type of lung tumor or lung cancer can compress the alveoli and reduce gas exchange capacity. In some cases the tumor will fill the alveoli. [33] Cavitary pneumonia is a process in which the alveoli are destroyed and produce a cavity. As the alveoli are destroyed, the surface area for gas exchange to occur becomes reduced.
The tendency for the alveoli to collapse is therefore almost the same at the end of exhalation as at the end of inhalation. Thirdly, the surface tension of the curved watery layer lining the alveoli tends to draw water from the lung tissues into the alveoli. Surfactant reduces this danger to negligible levels, and keeps the alveoli dry. [6] [37]
Alveoli and their capillary networks 3D medical illustration showing different terminating ends of bronchioles. Alveoli consist of two types of alveolar cell and an alveolar macrophage. The two types of cell are known as type I and type II cells [32] (also known as pneumocytes). [3] Types I and II make up the walls and alveolar septa.
(Pulmonary artery labeled at upper right.) Diagram of the alveoli with both cross-section and external view. Details; ... Image2 = Alveoli diagram.png ...
New deals just dropped, including our favorite digital picture frame, every Apple device you can think of, and a Barbie dreamhouse any kid would be thrilled to open Christmas morning.
Change alveoli -> alveolus: 07:34, 21 March 2020: 687 × 447 (312 KB) Jmarchn: Added an explanation how to change label text. 23:04, 20 March 2020: 687 × 447 (325 KB) Kupirijo: Spelling of oxigen -> oxygen, alveoli -> alveolus: 08:51, 16 March 2020: 687 × 447 (322 KB) Jmarchn: Added O2 and CO2 label. Better colour for the capillary fundus. 07 ...