Human Body Systems
The Respiratory System
Breathing air is necessary for keeping humans alive. Your lungs make up one of the largest organs in your body, and they work with your respiratory system to allow you to take in fresh air, get rid of stale air, and even talk. Let's take a tour of the lungs.
The respiratory system plays a vital role in the body, by providing your cells with much needed oxygen, as well as excreting carbon dioxide, which can be deadly if allowed to accumulate. The three major parts of the respiratory system are the airways, the lungs, and the muscles of respiration.