PSL Week Eight/Nine

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Across
  1. 3. This organ receives roughly 5% of an individual's resting blood flow.
  2. 4. This structure is often mistakenly believed to only carry deoxygenated blood.
  3. 7. Atrial pressure exceeds ventricular pressure during this phase of the cardiac cycle.
  4. 10. Changing this value causes the most significant change in resistance.
  5. 11. This valve is between the right atrium and ventricle.
  6. 13. Oxygenated blood enters the heart here.
  7. 14. These organs receive 100% of the cardiac output.
  8. 18. This calcium channel opens in response to a depolarization reaching threshold.
  9. 19. These fibers carry the electrical signal to the ventricles of the heart.
  10. 20. Voltage gated sodium channels are open at this phase of the ventricular AP.
  11. 21. Sodium flows through this following hyper-polarization.
  12. 22. Indirect measurement of heart depolarizations.
  13. 25. Phase of cardiac cycle which includes isovolumetric contraction.
Down
  1. 1. Responsible for the conduction delay of the cardiac action potential.
  2. 2. In a normal individual, this is the pacemaker of the heart.
  3. 5. Rapid heart rate.
  4. 6. Corresponds to ventricular depolarization.
  5. 8. The influx of this ion is responsible for the "plateau" of the ventricular AP.
  6. 9. This potassium channel opens in response to depolarization. Important for pacemaker potential.
  7. 12. Deoxygenated blood enters the heart here.
  8. 15. Movement of volume per unit time.
  9. 16. This structure drains blood into the right atrium.
  10. 17. This valve is between the left atrium and ventricle.
  11. 23. Regular P waves with regular QRS, but not bound to one another.
  12. 24. This structure is often mistakenly believed to only carry oxygenated blood.