Respiratory Respiratory system Human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide . The primary on respiratory system are the lungs, which carry out this exchange of gases as we breath. This process needs for our cells to live and function properly and it help us to get rid of carbon dioxide which is a waste product of cellular function. There are many disease such as asthma, chronic, obstructive, pulmonary disease and lung cancer and much more. Importance of respiratory system: The respiratory system does two most importance things, it brings oxygen into our body , which we need for our cells to live and it helps us to get rid of carbon dioxide. Which is always waste product of our body. For better result we need to improve our respiratory system, these are- Exercise regularly Eat a healthy and balanced diet Maintain a healthy weight Stop smoking , it can damage lungs Avoid indoor and outdoor air pollutio...