Ch 11 Cardiovascular System 1

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Across
  1. 2. (2) when the atria contract in an uncoordinated, rapid manner (350bpm+) causing the ventricles to contract irregularly
  2. 3. (3) 2nd largest vein in body; returns deoxygenated blood to the right atrium of the heart from the upper half of the body
  3. 7. pressure sensitive nerve ending in the atrium, aortic arch, & carotid arteries
  4. 9. innermost layer of the heart which lines the interior of the heart chambers & covers the heart valves
  5. 11. middle layer of the heart; makes up about 2/3 of the heart muscle
  6. 13. (2) life threatening condition where the heart ventricles quiver at a rate greater than 350 bpm
  7. 15. (2) (AV)two valves (tricuspid and mitral situated between the atria & ventricles
  8. 18. period of relaxation in the heart when the chambers are filling with blood
  9. 19. (2) valve that closes the orifice between the right atrium & right ventricle; composed of 3 cusps
  10. 21. a normal rhythm but with a rate above 100 bpm
  11. 22. (2) amount of blood pumped from the heart per minute
  12. 23. (2) thick wall that divides the two ventricles
  13. 24. (2) wall that separates the right & left atria
Down
  1. 1. (2) part of the impulse-conducting network of the heart that rapidly transmits impulses throughout the ventricles causing ventricles causing ventricular contractions
  2. 4. period of contraction when the chambers are pumping blood out of the heart
  3. 5. (3) (PVCs) condition where Purkinje fibers fire before the SA node causing the ventricle to contract prematurely
  4. 6. (3) (PACs) condition where an irritable piece of atrial tissue fires before the SA node causing atria to contract to soon
  5. 8. an irregular heartbeat or rhythm
  6. 10. (2) valve that closes the orifice between the left atrium & left ventricle
  7. 12. large arterial trunk that starts at left ventricle & supplies blood to other arteries
  8. 13. (2) life threatening arrhythmia in which the ventricles, not SA node, initiate the heartbeat. Rate is between 150-250 bpm
  9. 14. (3) largest vein in the body; returns deoxygenated blood to the right atrium from regions below the diaphragm
  10. 16. outer most layer of the heart & innermost layer of pericardial sac
  11. 17. (2) one of the small muscle bundles attached to the chordae tendineae & innermost endocardial wall of the ventricle
  12. 20. normal heart rhythm but with a rate below 60 bpm; common among athletes