Ap5

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Ap5

  1. 1. Cardiac conduction
  2. 2. Review <ul><li>Valves of the heart: </li></ul><ul><li>Tricuspid, bicuspid </li></ul><ul><li>Pulmonic, Aortic </li></ul><ul><li>Conduction: SA node, AV node, bundle of His, Purkinje fibers </li></ul><ul><li>Layers of the heart: epicardium, myocardium, endocardium </li></ul>
  3. 5. <ul><li>SA (sinoatrial) node and AV (atrioventricular) node are the heart’s pacemakers </li></ul>
  4. 6. Ion <ul><li>an atom or molecule where the total number of electrons is not equal to the total number of protons. </li></ul><ul><li>Thus has an electrical charge </li></ul>
  5. 7. Some ions in the body <ul><li>H+ </li></ul><ul><li>Ca 2+ </li></ul><ul><li>K+ </li></ul><ul><li>Na+ </li></ul>
  6. 10. Depolarization <ul><li>Inside of the cell becomes less electronegative (less negatively charged) </li></ul>

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