How to know your lungs are healthy

Lungs and airways lungs Book lung · In this spider diagram, the position of the book lungs is labelled 1 · Spider book lungs · Internal anatomy of a female spider, book lungs The lungs are the functional units of respiration and are key to survival They contain 1500 miles of airways, 300-500 million alveoli and have a combined

lungs The lungs are the main part of your respiratory system Here is how lungs work as the center of your breathing, the path a full breath takes