The air we breathe goes through the nose, nasal passages, and then through our trachea or also known as windpipe, which is separated into two branches called the bronchi or bronchial tubes. The bronchi subdivide many times inside our lungs, analogous to the branching pattern of grapes, finally becoming hairlike tubes called the bronchioles. In the last part of the terminal bronchioles are tiny bubble-like bunch of structures called alveoli or known as airsacs
The air will enter through the Nose -> and will pass Nasal passages for the filtering,moistening,and warming of the air -> down to Trachea -> that will go to theBronchi  -> which will go to the Bronchioles for the distribution of air to each -> Alveoli and the exchange of air will happen here