CV Physiology Crossword

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Across
  1. 5. work phase, heart pumps blood
  2. 7. flow of electricity in the heart originates in the _____ node
  3. 9. term for heart muscle
  4. 10. hardening of the arteries, excessive peripheral resistance
  5. 11. the side of the heart that pumps blood to the lungs
  6. 14. result of sympathetic innervation, fast heart rate
  7. 16. blood vessels that allow flow in one direction
  8. 17. sense blood pressure in the aortic arch and coronary sinus
  9. 18. relaxation phase, heart fills with blood
  10. 19. septum that separates R and L sides of the heart
  11. 20. cardiac chambers that contract from apex to base
Down
  1. 1. the heart can use _____ for 50% of its total energy during heavy exercise
  2. 2. cardiac muscle has _____ period to prevent restimulation
  3. 3. load against which the muscle exerts its contractile force
  4. 4. innervation that can slow heart rate to almost zero
  5. 6. innervation that can increase Q by 100%, increase force of contraction
  6. 8. general vasoconstrictor released at certain sympathetic nerve fibers
  7. 12. heart is connected by _____ disks that allows chemical and electrical coupling between cells
  8. 13. thin walled, sac-like chambers that act as primer pumps
  9. 15. heart has _____ rhythmicity