Anatomy Chapter 11 Circulatory System
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Questions and Answers

What does an electrocardiogram record?

  • Blood flow in the heart
  • Heart contractions
  • Electrical activity of the heart (correct)
  • Heart rate

    • What is the period during which the atria are depolarizing called?

    P wave

    During which phase do the ventricles repolarize?

    T wave

    What does the QRS wave represent?

    <p>The period during which the ventricles are depolarizing</p> Signup and view all the answers

    What is bradycardia?

    <p>An abnormally slow heart beat, below 60 beats per minute</p> Signup and view all the answers

    What is fibrillation?

    <p>A condition in which the heart is uncoordinated and useless as a pump</p> Signup and view all the answers

    What is tachycardia?

    <p>An abnormally rapid heart beat, over 100 beats per minute</p> Signup and view all the answers

    What causes heart block?

    <p>Damage to the AV node</p> Signup and view all the answers

    What is angina pectoris?

    <p>Chest pain resulting from ischemia of the myocardium</p> Signup and view all the answers

    Study Notes

    Electrocardiogram

    • Recording of the heart's electrical activity.
    • Important tool for diagnosing heart conditions and assessing heart health.

    P Wave

    • Indicates atrial depolarization.
    • Represents the electrical activity associated with the contraction of the atria.

    T Wave

    • Represents ventricular repolarization.
    • Occurs after ventricular contraction, indicating recovery of the ventricles.

    QRS Wave

    • Signifies ventricular depolarization, leading to contraction.
    • Appears after the P wave and before the T wave in an electrocardiogram.

    Bradycardia

    • Defined as a heart rate below 60 beats per minute.
    • Can indicate issues such as heart disease or response to medication.

    Fibrillation

    • A chaotic and uncoordinated heart rhythm.
    • Results in ineffective pumping of blood, posing serious health risks.

    Tachycardia

    • Characterized by a heart rate exceeding 100 beats per minute.
    • May be caused by stress, heart conditions, or stimulants.

    Heart Block

    • Involves damage to the AV node, affecting the heart's electrical conduction.
    • Can be complete or partial, disrupting communication between atria and ventricles.

    Angina Pectoris

    • Chest pain caused by reduced blood flow to the myocardium.
    • Often a symptom of underlying heart disease or ischemia.

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    Description

    Test your knowledge of the circulatory system with this flashcard quiz based on Chapter 11. Learn key terms such as electrocardiogram and various heart waves including P wave, QRS wave, and T wave. Enhance your understanding of heart activities and electrical recordings.

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