alveolus

(noun)

a small air sac in the lungs, where oxygen and carbon dioxide are exchanged with the blood

Related Terms

Examples of alveolus in the following topics:

  • Chromalveolata: Alveolates

    • Alveolates are defined by the presence of an alveolus beneath the cell membrane and include dinoflagellates, apicomplexans and ciliates.
    • The alveolates are named for the presence of an alveolus, or membrane-enclosed sac, beneath the cell membrane.
    • The exact function of the alveolus is unknown, but it may be involved in osmoregulation.

  • Basic Principles of Gas Exchange

    • This illustrates the exchange of gas in humans between a capillary and an alveolus.

  • Mammalian Systems and Protective Mechanisms

    • Numerous alveoli (sing. alveolus) and alveolar sacs surround the alveolar ducts .