What these tiny sacs in the lungs do and conditions that can affect them Medically reviewed by Susan Russell, MD Alveoli are ...

Constrictive bronchiolitis is limited to the bronchioles and does not extend into the alveoli. The clinical features of constrictive bronchiolitis consist of a chest radiograph that is often ...

Bronchiole Each bronchus splits again and again into thousands of smaller tubes called bronchioles which take the air deeper into the lungs. Alveoli At the ends of bronchioles are tiny air sacs ...

The simplest way to imagine this respiratory system is as an inverted tree: a large trunk (the trachea) branches over and over again (bronchioles), ending in tiny leaves (alveoli) that perform the ...