Air sac cannulas are indicated in birds with upper respiratory obstruction or for ventilation during surgical procedures involving the head and neck. Proper technique, knowledge of potential ...

The disease almost always starts in the spongy, pinkish gray walls of the lungs’ airways (called bronchi or bronchioles) or air sacs (called alveoli). There are more than 20 kinds of lung cancer.

Inside their bones and skin are tons of tiny air sacs that reduce the weight of these large birds, which is thought to help them soar long distances without using muscle energy. These air sacs ...

it passes through smaller and smaller tubes and ends up in tiny air sacs called alveoli. Oxygen passes through the walls of the alveoli and enters tiny blood vessels. The blood vessels carry ...

Alveoli At the ends of bronchioles are tiny air sacs called alveoli. Here oxygen moves into the blood and carbon dioxide moves out. Intercostal muscles These muscles run between the ribs and form ...