Alveolus (Noun)

A bony socket in the alveolar ridge that holds a tooth.

Nouns denoting body parts.

A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways.

Nouns denoting body parts.

The alveolus is the smallest unit of the lung where gas exchange occurs between the air we breathe and the blood.
Each alveolus is surrounded by a network of tiny blood vessels called capillaries, which allow for the exchange of oxygen and carbon dioxide.
The alveolus is a delicate structure that can be damaged by diseases such as emphysema, which can lead to breathing difficulties.
The walls of the alveolus are extremely thin, allowing for efficient gas exchange to occur between the air and the blood.
In the lungs, the alveolus is the site where oxygen is absorbed into the bloodstream and carbon dioxide is removed.