Answers

2016-06-18T11:45:48+08:00
As we inhale, the air/oxygen goes inside our body through trachea,which is the passageway of air then to the bronchi, two branching stems that connect the trachea to the lungs. After that, it travels to bronchioles, which are the hairlike tubes that connects to the alveoli. And lastly, to the alveoli where the gas exchange occur.
0