Respiratory System
Across
- 4. Tubes in the lungs that branch off from Bronchi
- 6. Move mucous out of the synus and nose
- 8. Smallest functional unit in the respiratory tract
- 9. Airways that lead from the trachea into the lungs
Down
- 1. Skeletal muscle that sits at the base of the chest
- 2. The action of breathing
- 3. Commonly known as windpipe
- 5. Also known as O2
- 7. Commonly called the voicebox