Anatomy of the Heart

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