What is the main physiological function of the lung

The lungs are the largest organ that can exchange gases. They are responsible for inhaling oxygen from the body and expelling exhaust gases from the body, such as carbon dioxide, etc. Therefore, our lungs must be protected. The lungs are vital to help our body provide sufficient oxygen. Our body needs sufficient oxygen to work properly, whether it is organs, tissues or even cells. once there is hypoxia or oxygen deficiency, our body will enter a state of development stagnation. You think if you can't breathe, your blood won't circulate, your various systems will be paralyzed or even collapsed, which is a fatal disaster for the body, so we must protect our lungs. Do not smoke at ordinary times. Smoking has a lot of nicotine and tar, which will cause great damage to the lungs and will gradually make people addicted to bad diseases. Eat more vitamin-rich vegetables and fruits to improve your resistance.