Anatomy of the Heart

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Across
  1. 1. Carries oxygen-poor blood from the body to the heart (2 words)
  2. 3. These arteries supply oxygenated blood to the head and neck regions of the body
  3. 7. Fiber branches that extend from the atrioventricular bundle
  4. 10. The sound made when valves open and close
  5. 11. A section of nodal tissue that sets the rate of contraction for the heart
  6. 13. The outer later of the wall of the heart
  7. 15. Carry blood that is oxygen-poor
  8. 16. The bundle of fibers that carry cardiac impulses
  9. 18. The muscular middle layer of the wall of the heart
  10. 19. When ventricles pump blood out of the heart
  11. 21. Valve between the left ventricle and the aorta
  12. 23. One of the upper heart chambers
  13. 25. When ventricles relax and fill with blood
  14. 27. Chambers that collect blood as it enters the heart
  15. 28. Fluid-filled sac that surrounds the heart
Down
  1. 2. Tiny vessels connecting arteries and veins
  2. 4. These arteries carry oxygenated and nutrient filled blood to the heart muscle
  3. 5. Valve between the right atrium and right ventricle
  4. 6. These arteries supply oxygenated blood to the arms
  5. 7. Valve between the right ventricle and the pulmonary artery
  6. 8. Cardiac __________ is the rate at which the heart conducts electrical impulses
  7. 9. Valve between the left atrium and left ventricle
  8. 12. One of these is felt to find a pulse
  9. 14. The smallest arteries
  10. 17. One of the lower chambers of the heart
  11. 20. The heart has four of these
  12. 22. Common ________ arteries carry oxygenated blood from the abdominal aorta to the legs and feet
  13. 24. The inner layer of the heart
  14. 26. Chambers that pump blood to the lungs