Cardio Puzzle

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Across
  1. 2. valve in the heart with blood flowing from the right atrium to right ventricle
  2. 4. smallest type of vessel in the human body
  3. 8. valve in the heart with blood flowing from left atrium to left ventricle
  4. 9. blood rich in this flows through arteries
  5. 11. largest artery in the body
  6. 13. the upper chamber of the heart (plural)
  7. 14. blood rich in this flows through veins
  8. 15. one of the largest veins in the body, carries blood from the lower part of the body
Down
  1. 1. one of the largest veins of the body, drains blood from the upper part of the body
  2. 3. vein carrying oxygen rich blood
  3. 5. artery carrying oxygen poor blood
  4. 6. chamber of the heart with the thickest walls
  5. 7. valve from right ventricle to pulmonary artery
  6. 10. lower chambers of the heart
  7. 12. valve to the aorta