Int Sci

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