Across
- 2. division
- 5. fibre that trasmits signals
- 7. of water vapor to water
- 10. when air is drawn into the lungs
- 12. chemical processes for life outer skin layer
Down
- 1. when air is released from the lungs
- 3. fluid movement across membranes
- 4. another name for nerve cell
- 6. makes vocal sounds
- 8. outer skin layer
- 9. process of breaking down blood
- 11. conveys oxygen in the blood