Across
- 5. Little blood vessels that transport blood
- 9. a large vein that carries the deoxygenated blood from the lower and middle body into the right atrium of the heart
- 10. Takes oxygenated blood from the heart out to the circulatory system
- 11. carries deoxygenated blood to the heart
- 13. Main organ that pumps blood
- 15. the main blood vessel through which oxygen and nutrients travel from the heart to organs throughout your body
- 16. forces oxygenated blood through the aortic valve to be distributed to the entire body.
Down
- 1. pumps the blood to the lungs where it becomes oxygenated
- 2. What humans breath in and it supports life
- 3. blood vessels that carry oxygen-rich blood from your lungs to your heart
- 4. a large, valveless vein that conveys venous blood from the upper half of the body and returns it to the right atrium
- 6. The things that humans and most animals use to breath with
- 7. receives oxygen-poor blood from the body and pumps it to the right ventricle.
- 8. what people breath out and gets transformed into oxygen by photosynthesis
- 12. receives oxygen-rich blood from the lungs and pumps it to the left ventricle
- 14. Has flaps that make sure that blood flows in the right direction