Across
- 2. One of two upper chambers in the heart
- 3. Movement to and fro or around something
- 6. has a function to temporarily close a passage
- 8. Two atoms which is a colorless gas
- 9. Provides nourishment
Down
- 1. A hollow part or cavity in an organ
- 4. Distribute oxygen-rich blood to your body
- 5. Provides the body with nutrition and oxygen
- 6. any of the tubes forming part blood circulation
- 7. Pumps blood through your body