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Jun 18, 2023 · Alveoli are tiny, balloon-shaped air sacs located at the end of the bronchioles, the branch-like tubes in the lungs. The alveoli move oxygen and carbon dioxide (CO 2) molecules into and out of your bloodstream. This article discusses the structure and function of the alveoli.
Oct 30, 2023 · The term alveolus (singular) refers to a hollow cavity, basin or bowl in latin. Consequently, there are different types of alveoli (plural) found throughout the human body. However, alveoli are most often used to describe the small air sacs of the lungs of mammals, and are therefore known more specifically as the pulmonary alveoli .
- Alice Ferng
- 17 min
- Content Manager
Oct 29, 2020 · The alveoli are part of the lungs; they are tiny air sacs that are the primary location of gas exchange—carbon dioxide for oxygen. Learn more about alveoli function in gas exchange and how your alveoli contribute to your body’s overall health.
Nov 10, 2022 · Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they’re microscopic, alveoli are the workhorses of your respiratory system....
- Marjorie Hecht
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] .
1. : a small cavity or pit: such as. a. : a socket in the jaw for a tooth. b. : a small air-containing compartment of the lungs in which the bronchioles terminate and from which respiratory gases are exchanged with the pulmonary capillaries. c. : an acinus of a compound gland. d. : a cell of a honeycomb. 2. : alveolar ridge sense 2.
A typical pair of human lungs contain about 700 million alveoli, producing 70m2 of surface area. Each alveolus is wrapped in a fine mesh of capillaries covering about 70% of its area. An adult alveolus has an average diameter of 200 micrometres, with an increase in diameter during inhalation.
