The heart conduction system

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  • Put group into teams of 4. For each question the groups must give the letter that they think is correct. Using whiteboard, draw scores and keep tabs.
  • The heart conduction system

    1. 1. Lloyd Dean The Heart
    2. 2. Test Time! Click here to start Can You Label The Heart?
    3. 3. A B F C D E G H Click on the Left Atrium I J
    4. 4. A B F C D E G H Click on the Left Ventricle I J
    5. 5. A B F C D E G H Click on the Tricuspid Valve I J
    6. 6. A B F C D E G H Click on the Aortic and Pulmonary Valves I J
    7. 7. A B F C D E G H Click on the Right Atrium I J
    8. 8. A B F C D E G H Click on the Right Ventricle I J
    9. 9. A B F C D E G H Click on the Pulmonary Veins I J
    10. 10. A B F C D E G H Click on the Pulmonary Artery I J
    11. 11. A B F C D E G H Click on the Aorta I J
    12. 12. A B F C D E G H Click on the Vena Cava I J
    13. 13. Game Over
    14. 16. Cardiac Output <ul><li>What is it? </li></ul><ul><li>The amount, or volume, of blood pumped by the heart per minute (mL blood/min) </li></ul><ul><li>Heart rate and Stroke Volume make this up </li></ul><ul><li>Heart rate (HR) – beats per minute </li></ul><ul><li>Stroke Volume (SV) – Millilitres (mL) of blood pumped out with each beat. </li></ul><ul><li>Cardiac Output = HR x SV </li></ul><ul><li>An average person has a resting heart rate of 70 beats a minute and a resting stroke volume of 70mL/beat </li></ul><ul><li>Work out their cardiac output </li></ul><ul><li>CO = HR x SV </li></ul><ul><li>CO = 70 x 70 </li></ul><ul><li>CO = 4900 mL/minute </li></ul>
    15. 17. Conduction System <ul><li>The hearts atria, and then ventricles, need to contract simultaneously </li></ul><ul><li>Conduction system includes several components; </li></ul><ul><ul><li>Sinoatrial (SA) node – Found in the myocardium at the top of right atrium </li></ul></ul><ul><ul><li>SA node is commonly know as the heart’s pacemaker </li></ul></ul><ul><ul><li>Each electrical impulse travels through the muscle fibres of the atria and ventricles, causing them to contract </li></ul></ul><ul><ul><li>Atrioventricular (AV) node delays the electrical impulse to allow the atria to contract and empty all blood </li></ul></ul><ul><ul><li>AV node is an electrical relay station that sends an impulse through the ventricles along special fibres called “His-Purkinje” fibres. </li></ul></ul>

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