HAPs Cardiovascular System

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Across
  1. 4. the heart is supplied blood by the ____. (2 words)
  2. 6. Blood flow is regulated by the vasomotor center, baroreceptors, the cerebral cortex, _____, and various hormones.
  3. 7. protects the inner cardiac tissue, heart chambers, and valves by providing a physical barrier
  4. 9. ____ nodes are the first step in the heart's contraction system
  5. 13. made up of several capillaries combined and delivers blood to the veins
  6. 14. systemic circuit extends from the heart to the _____.(2 words)
  7. 18. a ruptured blood vessel
  8. 20. What connects arterioles to venules?
  9. 23. tunica externa is made from mostly ____ fibers.
  10. 26. reduces friction with the heart and other structures by lubrication
  11. 27. endothelium of the artery (2 words)
  12. 28. the term that refers to the contracting of the heart
  13. 29. the pressure that blood exerts on the walls of vessels (2 words)
  14. 30. blood flows through veins more smoothly because arteries ____.
  15. 32. nerve impulses from the sympathetic nervous system causing the artery lumen to narrow
  16. 33. blockage of blood flow to the heart, or,a heart attack (2 words)
  17. 34. amount of chambers of the heart
  18. 35. functions to facilitate contraction and relaxation of the heart
Down
  1. 1. prevents blood from moving in the wrong direction during relaxation
  2. 2. blood clots blocking the coronary arteries for a prolonged period of time (2 words)
  3. 3. the hollow core of the artery that is surrounded by three layers of tissue
  4. 5. cardiac muscle cells are _____, meaning they produce their own pulses
  5. 8. vessels that carry blood away from the heart
  6. 10. a fluid filled space between the parietal and visceral membranes that help reduce friction (2 words)
  7. 11. type of muscle cells that make up the heart
  8. 12. tubes that carry blood between the heart cells,body cells,and tissues (2 words)
  9. 15. this will happen if the cardiac system fails
  10. 16. veins that have weakened valves leading to backward blood flow (2 words)
  11. 17. the only arteries to carry oxygen-poor blood (2 words)
  12. 19. side of the heart that the pulmonary circuit starts on
  13. 21. pumping chambers of the heart
  14. 22. the relaxing phase of the heart beat
  15. 24. prevents blood from moving in the wrong direction during periods of contraction
  16. 25. in order to form valves, many veins have ____.
  17. 31. receiving chambers of the heart