The heart

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Across
  1. 4. valve that lies between the right atrium and the right ventricle
  2. 6. how many chambers does the heart have?
  3. 7. The innermost layer of the heart is called the
  4. 9. Another name for a heart attack is a(n)
  5. 13. The sac-like membrane surrounding the heart is the
  6. 14. angi/o
  7. 15. Blood that has just passed through the bicuspid valve is in the
  8. 16. The beat of the heart as felt through the walls of arteries is called the
Down
  1. 1. carries oxygen-poor blood to the lungs from the heart
  2. 2. are attached to the atrioventricular valves
  3. 3. narrowing of the mitral valve.
  4. 5. Another name for the visceral pericardium.
  5. 8. largest artery in the body
  6. 10. The pulmonary vein returns oxygen-rich blood to the
  7. 11. small vein
  8. 12. smallest blood vessel