The Circulatory System

1234567891011121314
Across
  1. 5. The major muscle of the circulatory system.
  2. 7. The aorta takes oxygenated blood to the ____________.
  3. 8. The lower chambers of the heart.
  4. 12. Oxygenated blood enters the heart through the _________________ vein.
  5. 13. Which side of the heart pumps deoxygenated blood?
  6. 14. Which chamber of the heart has a thinner muscle walls?
Down
  1. 1. What is the largest blood cell?
  2. 2. This prevents the backwards flow of blood in the heart.
  3. 3. What type of blood vessel carries blood toward the heart?
  4. 4. How many chambers does the heart have?
  5. 6. The left ventricle pumps blood to the _____________.
  6. 9. The pulmonary artery carries blood to the ___________.
  7. 10. What separates the left side of the heart from the right side?
  8. 11. The liquid portion of blood is called ______________.