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Organs » Alveoli


Descriptions of Alveoli

Alveoli: Tiny air sacs at the end of the bronchioles in the lungs.
Source: National Institute of Health

Summary Information: Alveoli

Alveoli: The alveoli are tiny hollow sacs in the lungs and are outcroppings of the bronchioles. Alveoli are responsible for the exchange of oxygen and carbon dioxide in the blood. Alveoli receive air mixed with oxygen from the outside through the organs of the respiratory system. Alveoli are wrapped by and interface with the capillaries from branches of the pulmonary artery and pulmonary vein to exchange gasses from the blood.

Conditions affecting the alveoli include infant respiratory distress syndrome, cystic fibrosis, emphysema, asthma, chronic bronchitis, trauma, cancer, and infection.

Alveoli: 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. (Source: excerpt from NHLBI, Facts About Lymphangioleiomyomatosis (LAM): NHLBI)

Closely Related Organs: Alveoli

The following organs are closely related to the organ: Alveoli:

Conditions Afflicting Organs: Alveoli

The following conditions are related to the organ: Alveoli:

Symptoms Related to Afflictions of: Alveoli

These symptoms are related to afflictions of the organ: Alveoli:

Condition count: 1 ; see list below.

Organ types: Lung (73)

Number: about 300 million alveoli

Organs: list of all organs

Diseases List for Alveoli:

The following list of medical conditions have 'Alveoli' or similar listed as an affected body part in our database:


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