Cardiovascular System Crossword

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Across
  1. 5. thin outer layer that covers the heart and has pericardial fluid
  2. 7. turbulent blood flow causes these sounds
  3. 9. carries blood from the heart to the body
  4. 12. leads pacemaker activity and has the fastest action potentials per minute (two words, no space)
  5. 18. vessels carrying blood from the heart that branch into capillaries
  6. 20. formed by grouped specialized cells that perform pacemaker activity in the heart
  7. 21. oxygen-poor blood flows here from the right atrium and gets pumped into the pulmonary artery (two words, no space)
  8. 22. without this, blood squeezed by contracted skeletal muscle would flow both away and towards the heart (two words, no space)
  9. 23. a mechanism where the capillary walls only allow plasma to flow through (two words, no space)
  10. 24. last place in the current flow sequence through the heart wall (two words, no space)
  11. 26. type of circulation where oxygenated blood is pumped from left chambers to tissues of the body
  12. 27. thin inner lining of each heart chamber
  13. 28. oxygenated blood flows here from the right and left pulmonary veins (two words, no space)
  14. 29. heart relaxes in this period of the cardiac cycle
Down
  1. 1. depolarization of ventricles is shown in this part of the ECG record (two words, no space)
  2. 2. abnormally high blood pressure
  3. 3. mechanoreceptors that sense and respond to changes in average pulse pressure and arterial pressure
  4. 4. type of circulation where oxygen-poor is pumped from right chambers to the lungs to absorb oxygen
  5. 6. happens when the net pressure, influencing bulk flow, is positive
  6. 8. end-diastolic volume minus end-systolic volume (two words, no space)
  7. 10. the smallest blood vessels
  8. 11. type of cell that makes up majority of cardiac muscle cells
  9. 13. one of the four heart valves
  10. 14. large vessels that serves as a reservoir for oxygen-poor blood and returns it to the heart
  11. 15. expressed by the pressure gradient divided by the resistance to flow (two words, no space)
  12. 16. middle cardiac muscle layer of the heart wall
  13. 17. ability of the heart muscle to generate electrical activity through spontaneous action potentials
  14. 19. heart contracts in this period of the cardiac cycle
  15. 25. materials independently move down concentration gradients