It is usually lost at an early age, leaving no trace of the alveolus in the jaw.
From the en.wikipedia.org
In lactating glands, each milk-secreting alveolus contains one or two L cells.
From the nature.com
The alveolus is the basic anatomical unit of gas exchange in the lung.
From the en.wikipedia.org
The alveolus on the left is normal, whereas the one on the right is full of fluid from pneumonia.
From the en.wikipedia.org
The inset in d is a close-up of the collapsed alveolus.
From the nature.com
If the walls of the hundreds of millions of alveolus in a pair of lungs could be spread out and placed side by side, they would cover the floor of a classroom.
From the sciencedaily.com
The pulmonary alveolus is the most peripheral structure within the air spaces of the lung, in which the gases carbon dioxide and oxygen move between the air and the blood.
From the sciencedaily.com
More examples
A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
Tooth socket: a bony socket in the alveolar ridge that holds a tooth
An alveolus (plural: alveoli, from Latin alveolus, "little cavity") is an anatomical structure that has the form of a hollow cavity. Found in the lung, the pulmonary alveoli are spherical outcroppings of the respiratory sites of gas exchange with the blood. ...
A small cavity or pit; an anatomical structure that has the form of a hollow cavity; a small air sac in the lungs, where oxygen and carbon dioxide are exchanged with the blood
(Alveoli) Microscopic air sacs located at the end of the respiratory tract; Grape-like clusters of sacs that allow inhaled oxygen to enter the bloodstream and carbon dioxide to leave the bloodstream
(alveoli (al-VEE-o-lye)) Tiny air sacs at the end of the bronchioles in the lungs.
(alveoli) tiny sacs that are the smallest airways of the lungs.
(alveoli) (al-vee-o-lie) air cells of the lungs.
(Alveoli) Microscopic air sacs in the lungs where gas exchange occurs with the circulatory system.