The respiratory system
Across
- 1. controls the volume of the chest
- 7. narrow tubes that carry air into a lung
- 8. this organ takes in air and filters it with tiny hairs.
- 9. the average number of breaths an adult takes per minute
- 10. takes air down to the lungs
- 12. the movement of a substance from where it is in high concentration to where it is in low concentration
- 14. move the chest during breathing
- 16. the release of energy from food in a cell
Down
- 2. tiny air sacs for gaseous exchange
- 3. another word for trachea
- 4. bones that protect the lungs
- 5. gaseous exchange
- 6. taking in oxygen for respiration and letting out carbon dioxide and water vapour from respiration.
- 7. a tube that carries air into the lung
- 11. A flap of skin that stops food going into the trachea.
- 13. A membrane that helps the lungs to move easily.
- 15. A gas that moves from the capillaries into the alveoli
- 17. A gas that moves from the alveoli to the capillaries