What Is the Respiratory System? The respiratory system is the organs and other parts of your body involved in breathing, when you exchange oxygen and carbon dioxide. All the cells in your body need ...

The respiratory system has a key role in gaseous exchange but also helps to regulate blood pH, control blood pressure and provide non-specific immune defence mechanisms. Like all organ systems, it ...

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they’re microscopic, alveoli are the workhorses of your respiratory system. People ...