Circulatory System Review

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Across
  1. 4. This valve is located between the left atrium and left ventricle.
  2. 5. What is the upper chamber of the heart called?
  3. 8. A muscular wall that separates the heart into the left and right side.
  4. 9. A body system that consists of the heart, blood vessels and blood; also called circulatory system.
  5. 11. When blood is separated,the liquid layer is called _____.
  6. 13. Oxygen lacking blood enters the heart through the vena cava and moves into the _____.
  7. 14. The _____ powers the entire circulatory system.
  8. 15. The walls of the heart are composed of _____ layers.
Down
  1. 1. _____ keep blood from flowing backwards in the heart.
  2. 2. ______ carry blood to the heart.
  3. 3. The smallest of vessels; where the exchange of gas, nutrients and waste occurs.
  4. 6. The ______ artery carries blood from the right ventricle to the lungs.
  5. 7. _____ carry blood away from the heart.
  6. 10. What is the lower chamber of the heart called ?
  7. 12. Blood leaves the left ventricle through the _____.