Across
- 1. carry blood at a low pressure
- 4. bottom chambers of the heart
- 8. gas that passes from a body tissue into the blood
- 10. carry blood at a high pressure
Down
- 1. stop blood flowing back the way
- 2. top chambers of the heart
- 3. blood cell that carries oxygen
- 5. blood vessel that supplies heart muscle with oxygen
- 6. carries blood from heart to the body
- 7. ____ cava - carries blood from the body into the heart
- 9. blood cell that fights infections