Across
- 4. The sound that the heart makes when it pumps
- 7. Small tubes that help get blood to all cells in the body
Down
- 1. A thick substance that forms to stop bleeding
- 2. Tubes that carry blood back to the heart from other parts of the body
- 3. The action of sending blood around the body
- 4. An organ in the chest that sends blood all around the body
- 5. Tubes that carry blood from the heart to other parts of the body
- 6. A red liquid that flows throughout the body