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Summary Physiology Basic Concepts

- Physiology basic concepts
- 2022 - 2022
- Universiteit Leiden (Universiteit Leiden, Leiden)
- Biomedische Wetenschappen
278 Flashcards & Notes
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A snapshot of the summary - Physiology basic concepts

  • 1 Theme A

  • 1.2 Cardiac action potential

    This is a preview. There are 18 more flashcards available for chapter 1.2
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  • Where does depolarization start? And repolarisation?
    Depolarisation starts in endocard and moves to epicard
    Repolarisation starts in epicard and moves to endocard
  • 1.3 Genesis of ECG

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  • What is the difference in conduction between thick and thin fibers?
    Thick fibers conduct faster than thin fibers because they encounter less resistance
  • Longitudinal vs lateral conduction?
    Lateral is parallel condunction and takes more time
  • Why does the electrical impulse propagates so slow in the AV node?
    AV node is a network of fine fibers 
    dia 10
  • What is the heart vector?
    The net vector
  • What is Enthovens Triangle?
    Way to put pads on patient to measure an ECG
  • 1.4 Basics of ECG

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  • How does the ECG look like for the patient?
    6 electrodes on the chest and electrodes on the limbs
    the electrode on the right foot is just a neutral electron
  • An other lead system is Mason-Likar, what is this?
    Electrodes are placed on the torso and not on the extremities
    --> for exercise measurements
  • What pathologies will show up on the ECG?
    Conduction delays
  • What is discordant and concordant?
    Discordant = Positive area of QRS complex is smaller than the negative areas. So QRS complex is netto negative. T wave is positive.
    Concordant = T-wave and QRS complex netto both positive (area of positive QRS complex greater than negative areas)

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