Learn how we breathe, the path air takes into our lungs, and the process of gas exchange.
Air enters through the nose, travels down the trachea (windpipe), into the bronchi, and finally into the lungs.
What is the windpipe also called?
The trachea
What are the two tubes that branch off the trachea into the lungs called?
The bronchi
In tiny air sacs called alveoli, oxygen passes into the blood and carbon dioxide passes out of the blood, to be exhaled.
Where does gas exchange happen in the lungs?
In the alveoli (tiny air sacs)
What gas do we breathe in, and what gas do we breathe out?
We breathe in oxygen and breathe out carbon dioxide
1. What is the windpipe called?
2. Where does gas exchange occur in the lungs?
3. What gas do we inhale?
4. What gas do we exhale?
5. What are the two branches of the trachea called?