respiratory system
Across
- 3. smallest type of blood vessel
- 4. passageway that leads to back of mouth
- 6. membrane behind nose and mouth
- 7. oval shaped opening in skull
- 9. organ forming on passageway to lungs
- 10. pair of spongy organs
- 11. airway from larynx to bronchi
- 12. contracts upon inhalation
Down
- 1. microscopic hairs on cells
- 2. canal connected to throat and stomach
- 5. area of body between neck and abdomen
- 8. large airway that leads to lung