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BookmarkAn alveolus (plural: alveoli), is an anatomical structure that has the form of a hollow cavity.
In the lung, the pulmonary alveoli are spherical outcroppings of the respiratory bronchioles and are the primary sites of gas exchange with the blood.
Alveoli are peculiar to mammalian lungs; different structures are involved in gas exchange in other vertebrates.
The alveoli are found in the respiratory zone of the lungs..
For more information about the topic Pulmonary alveolus, read the full article at Wikipedia.org, or see the following related articles:
Gas exchange — Gas exchange or respiration takes place at a respiratory surface; a boundary between the external environment and the interior of the body. For ... > read more
Lung — The lung is the essential organ of respiration in air-breathing vertebrates. Its principal function is to transport oxygen from the atmosphere into ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Pulmonary alveolus at Wikipedia.org. See the Wikipedia copyright page for more details.
