Across
- 1. the ________ are the chambers that fill with the blood returning to the heart from the body and lungs.
- 8. These arteries are hoses that carry blood pumped under high pressure to smaller and smaller branched tubes called ___________________.
- 9. the tow chambers on the bottom are called ____________.
- 11. the _____________ system is your body's delivery system.
- 12. the tubes that more gently drain back to the heart are _____________.
Down
- 2. your blood travels through a ___________ pipeline with many branches, both big and small
- 3. the tubes that carry blood away from your heart are called _____________.
- 4. your heart is a _____________.
- 5. your blood relies on _________ special valves inside the heart.
- 6. an adult hart pumps approximately 4,000 __________ of blood each day!
- 7. before each heartbeat your heart fills with _________.
- 10. blood is pumped from the heart to your ___________.