The plural of alveolus. The alveoli are tiny air sacs within the lungs where the exchange of oxygen and carbon dioxide takes place.

Tiny air sacs at the end of the bronchioles (tiny branches of air tubes) in the lungs. The alveoli are where the lungs and the bloodstream exchange carbon dioxide and oxygen. Carbon dioxide in the blo [..]

little air sacs attached to the end of bronchioles

Tiny air sacs located at the end of the respiratory tract in the lungs that allow inhaled oxygen to enter the bloodstream and carbon dioxide to leave the bloodstream with exhalation.

(n) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways(n) a bony socket in the alveolar ridge that holds a tooth

The sacs in the lungs at the ends of the smallest airways where oxygen is exchanged for carbon dioxide in the blood.

Tiny air sacs in the lung. They are where oxygen enters and carbon dioxide leaves the bloodstream.

Alveoli are small folded membranes, shaped like a bunch of grapes where gas exchange takes place. Alveoli are situated at the end of bronchioles.

Small polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal Bronchioles through the walls of which gas exchange between alveolar air and pulmonary Capillary Blood t [..]

Plural form of the word alveolus.

Tiny air sacs at the end of the bronchioles in the lungs.

The small, branched air-containing pockets of the lungs where oxygen inhaled during respiration passes through a thin membrane and into the blood stream. Carbon dioxide passes across these thin membra [..]

the air cells of the lungs

Tiny air sacs in the lungs; an adult has about 300 million. When air is breathed in, it goes via the airways to the alveoli. From there, oxygen moves into the bloodstream.

A small cell containing air in the lungs, a sac-like dilation of the alveolar ducts in the lung (plural: alveoli) (27 Sep 1997)

Microscopic air sacs in the lungs.

Tiny sac-like air spaces in the lungs where transfer of carbon dioxide from blood into the lungs and oxygen from air into blood takes place.

The smallest lung units that include thin-walled air sacs directly linked with a network of small blood vessels (capillaries) where gas exchange occurs

Air sacs of the lungs.

The tiny air sacs in the lungs, where oxygen enters the blood and carbon dioxide leaves it.

The millions of tiny air sacs in the lungs, where oxygen and carbon dioxide are exchanged with the bloodstream.