Across
- 3. microscopic air sacks at the end of bronchioles that are surrounded in capillaries
- 6. smaller branching tubes that link bronchi and alveoli
- 7. breathing disorder that causes wheezing and shortness of breath
Down
- 1. tube that connects the sinuses to bronchi
- 2. microscopic blood vessels that surround the alveoli
- 4. strong muscle that contracts when you breath in, causing your lungs to inflate
- 5. trachea splits into these smaller branching tubes