Across
- 5. - Along with exercise, it helps prevent circulatory system diseases.
- 6. - What blood picks up in the lungs during circulation.
- 8. - Deposits that can block blood vessels and cause heart attacks.
- 9. - The partition that separates the heart into two sides.
- 11. - Prevents the backward flow of blood in the heart.
- 13. - The shape of red blood cells in a specific inherited disease.
- 14. - A condition caused by a blocked or ruptured blood vessel in the brain.
Down
- 1. - The type of muscle the heart is made of.
- 2. - Blood vessels that return blood to the heart.
- 3. - The upper chambers of the heart.
- 4. - The lower chambers of the heart.
- 7. - Activity that increases heart rate and strengthens the circulatory system
- 10. - Produced during respiration and required by muscles during physical activity.
- 12. - Blood vessels that carry blood away from the heart.