The cells in our body need oxygen in order to create energy. We get this oxygen from breathing. 😮
When we breathe, we know air flows into our mouth or nose 👄👃.
It’s then carried to our trachea, and from there our trachea splits into two separate tubes called bronchi.
This split happens at a point known as the carina. From these two separate bronchi within the lungs, more splits arise to form a branching of many smaller bronchi 🌳.
At the end of these branches we have millions of tiny air sacs called alveoli.
The thin walls of the alveoli allow oxygen and carbon dioxide to pass into and out of our bloodstream.
Our diaphragm muscle also aids in expanding and deflating the chest as needed to draw in air or push it out 🌬.
医学生Medic[超话]
