Respiratory System
Across
- 1. filtering out dust and other particles that enter the nose with the breathed air.
- 3. two air tubes that branch off of the trachea and carry air directly into the lungs.
- 5. filters the air we breathe and branches into the bronchi
- 6. They are tiny, multi-lobed air sacs made of simple squamous cells
- 9. It is a flap of tissue that seals off the opening of the trachea during the process of swallowing
- 10. It leads from the oral and nasal cavities in the head to the esophagus
Down
- 2. a disease of the respiratory system
- 4. commonly known as the “voice box.”
- 7. dome-shaped muscle at the bottom of the lungs called the
- 8. Air enters through the