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a little cavity, pit, or cell, as a cell of a honeycomb.
an air cell of the lungs, formed by the terminal dilation of tiny air passageways.
one of the terminal secretory units of a racemose gland.
the socket within the jawbone in which the root or roots of a tooth are set.
Source: Dictionary.com
alveolus | Define alveolus at Dictionary.com
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Pulmonary alveolus - Wikipedia


An alveolus is a hollow cavity found in the lung parenchyma, and is the basic unit of respiration. Lung alveoli are the ends of the respiratory tree, branching from ...

Alveoli - Definition, Structure, and Function in the Lungs - Verywell


Oct 30, 2016 ... What is the definition of the alveoli, what is their function in the respiratory system, and what lung conditions to they play a role in?

Structure and function of the alveoli - Curoservice


The alveoli are grouped together like a lot of interlinked caves, and this allows the gas exchange into lungs.

Alveoli: Function, Definition & Sacs - Video & Lesson Transcript ...


Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream. Learn more about how they...

What is the main function of the alveoli? | Reference.com


The main function of the alveoli is the exchange of carbon dioxide for oxygen in the lungs. Alveoli are small air sacs of the respiratory system. For this gas ...

What is the function of the alveoli? | Reference.com


The function of the alveoli is to assist in oxygen exchange through the membranes of the small balloon-like structures. The alveoli are found on the branches of ...

What is the purpose of the alveoli? | Reference.com


Alveoli are small air sacs in the lungs that absorb the oxygen that we breathe in and remove all the carbon dioxide from the bloodstream....

Alveoli - Boundless


Learn more about alveoli in the Boundless open textbook. Alveoli are hollow cavities in the lung that perform gas exchange with the blood.