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