Respiratory System
Across
- 4. the trachea is also called the _________
- 5. When you exhale, your lungs ______
- 6. As you breathe, this contracts and flattens to give your lungs room to fill up with air _________
- 7. When you inhale, air enters your lungs, and ______ from that air moves to your blood
Down
- 1. What is the name of the tiny air sacs in your lungs?
- 2. _________ is not good for your lungs
- 3. Your body couldn’t breathe without this system. Which system is it?
- 5. The respiratory system is made up of the trachea, the lungs, and the ______