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

The condition causes substances such as fats and proteins to accumulate in the alveoli, the ‘air sacs’ of the lung, where oxygen and carbon dioxide enter and exit the blood stream. This ...

A waste product of aerobic respiration is carbon dioxide. The layer of moisture in the alveoli allows gases to dissolve so that they can diffuse quickly. The alveoli have a very large total ...

small size - each of the alveoli is a small sphere about 300 μm in diameter, giving it a larger surface area to volume ratio than larger structures number - there are around 700 million alveoli ...