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