Human Circulatory System Quiz
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Questions and Answers

What is referred to as the general direction of the heart depolarization wave front in the frontal plane?

  • Electrical axis of heart (correct)
  • Electrical conduction system
  • Heart rate variability
  • Cardiac cycle
  • Which part of the heart does the lead V1-V2 correspond to?

  • Atrioventricular node
  • Left ventricle
  • Right ventricle (correct)
  • Interventricular septum
  • What is the name of the system shown in Figure 6.6?

  • Lead II system
  • Hexaxial system
  • Einthoven triangle
  • Lead System (correct)
  • Which of the following leads corresponds to the left ventricle?

    <p>V5-V6</p> Signup and view all the answers

    What is the term for the wave front of depolarization in the heart?

    <p>Depolarization wave front</p> Signup and view all the answers

    What is the frequency range of EEG waveforms?

    <p>0.5 Hz to 30 Hz</p> Signup and view all the answers

    What is the voltage range of EEG waveforms?

    <p>5 mV to 100 mV</p> Signup and view all the answers

    Who is the author of the passage?

    <p>Ahmed N. Al-Jamal</p> Signup and view all the answers

    What is the topic of the passage?

    <p>Electricity of human bodies</p> Signup and view all the answers

    What is the primary focus of the passage?

    <p>EEG waveforms</p> Signup and view all the answers

    What is the approximate frequency range of EMG signals?

    <p>10 to 3000 Hz</p> Signup and view all the answers

    How many types of electrodes are used for EMG recording signals?

    <p>Two</p> Signup and view all the answers

    What is the primary purpose of EMG recording?

    <p>To measure muscle activity</p> Signup and view all the answers

    What is the unit of measurement for EMG signal frequency?

    <p>Hz</p> Signup and view all the answers

    What type of information can be obtained from EMG signals?

    <p>Muscle activity and movement</p> Signup and view all the answers

    What is the destination of the blood pumped out of the ventricle?

    <p>Lungs</p> Signup and view all the answers

    Where does the oxygenated blood returning from the lungs go?

    <p>Left atrium</p> Signup and view all the answers

    In right-handed individuals, the amplitude of the heart depolarization wave is typically higher on which side?

    <p>Non-dominant side</p> Signup and view all the answers

    Where are the heart depolarization waves more prominent?

    <p>Posteriorly and with closed eyes</p> Signup and view all the answers

    What is the role of the atrium in the process?

    <p>Receiving oxygenated blood from the lungs</p> Signup and view all the answers

    What is the correct sequence of blood flow?

    <p>Atrium -&gt; Ventricles -&gt; Pulmonary arteries -&gt; Lungs</p> Signup and view all the answers

    What is the effect of relaxation on the heart depolarization waves?

    <p>They become more prominent</p> Signup and view all the answers

    What is the relationship between the amplitude of the heart depolarization wave and the individual's handedness?

    <p>It is higher in right-handed individuals</p> Signup and view all the answers

    Which blood vessel carries oxygenated blood from the lungs to the heart?

    <p>Pulmonary veins</p> Signup and view all the answers

    What is the effect of eye closure on the heart depolarization waves?

    <p>They become more prominent</p> Signup and view all the answers

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