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Primary Care Paramedic (Heart and Physiology)

  1. Electrical conduction pathway through the heart (5 steps)
    • 1. SA Node
    • 2. AV Node
    • 3. Bundle of HIS
    • 4. Left and Right bundle branches
    • 5. Purkinje fibers
  2. Cation (+) outside the cell that flows inside at Phase 0
    Sodium (Na+)
  3. Anion (-) inside the cell that flows out at Phase 1
    Potassium (K-)
  4. Cation (+) Outside the cell that flows inside at Phase 2
    Calcium (2+)
  5. What is phase 4 of the action potential
    Resting membrane potential
  6. What happens in phase 0 of the action potential
    Rapid depolarization, sodium flows into cell
  7. What happens in phase 1 of the action potential
    Sodium channels close, potassium and chloride flows out of the cell
  8. What happens in phase 2 of the action potential
    Plateau phase, calcium flows in, potassium flows out
  9. What happens in phase 3 of the action potential
    Rapid repolarization calcium stops flowing in, potassium keeps flowing out
  10. Initial coronary artery that heads down the right atrium
    Right coronary artery
  11. Initial coronary artery that heads down the left atrium
    left coronary artery
  12. Artery that breaks off of the right coronary artery and heads down the posterior side of the right ventricle
    Posterior descending artery
  13. Artery that breaks off of the right coronary artery and proceeds down the anterior right ventricle
    Right marginal artery
  14. Artery that breaks off of the left coronary artery and proceeds down the anterior side between the ventricles
    Left anterior descending artery or Intraventricular artery
  15. Artery that breaks of the left coronary artery and heads to the posterior left ventricle
    Left circumflex artery
  16. Artery that breaks off of the left coronary artery and heads down the side of the left ventricle
    Left marginal artery
  17. Normal blood PH
    7.35 - 7.45
  18. More carbon dioxide in the blood leads to
    Acidosis
  19. Less carbon dioxide in the blood leads to
    Alkalosis
Author
Anonymous
ID
199415
Card Set
Primary Care Paramedic (Heart and Physiology)
Description
General Questions on Heart and physiology
Updated

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