These three features are particularly important to our lungs for efficient gas exchange. Most of them also ... Large surface area: human lungs contain about 500 million alveoli, which creates ...

The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we do not need. It contains these parts: two lungs tubes leading ...

In pulmonary gas exchange, oxygen moves from the lungs to the bloodstream, while carbon dioxide moves from the bloodstream to the lungs. Read the full story here.

The lung is one of the most fascinating and intricate ... immune responses can have severe consequences for the vital gas exchange. Therefore, the balance between immune protection and prevention ...