Respiratory system anatomy
Across
- 2. throat; tube that is 5 inches long
- 6. the name of the smooth tissue that surrounds the lungs
- 8. small hairs that heat and filter air
- 9. a substance inside the nasal cavity that is a line of defense against bacteria and foreign debris
- 10. grape like sacs; gas exchange happens here
- 12. the right lung has three of these
Down
- 1. smallest conducting passages leading to the alveoli
- 3. flap that stops food or other substances from entering the lungs; reflex
- 4. the last tube right before the air enters the lungs that is made of cartilaginous rings
- 5. primary, secondary, and tertiary branches of the tree
- 7. where the air enters the nose; visible part of the respiratory system
- 11. guides air to the trachea