Structure and Function of the Cardiovascular System Quiz
20 Questions
1 Views

Structure and Function of the Cardiovascular System Quiz

Created by
@PrincipledEuler

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of muscle fibers are present in the myocardium?

  • Non-striated muscle with features of smooth muscle
  • Striated muscle with features of smooth muscle (correct)
  • Cardiac muscle with features of smooth muscle
  • Smooth muscle with features of cardiac muscle

    • What initiates the action potential within the heart?

  • Autorhythmic cells (correct)
  • Pacemaker cells
  • Conducting fibres
  • Mitochondria

    • What is the basic rate of action potential generation within the heart?

  • 40-60 bpm
  • 160-180 bpm
  • 120-140 bpm
  • 80-100 bpm (correct)

    • Which phase of the heartbeat involves the relaxation of heart muscles and allows the chambers to fill with blood?

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

    Which structure prevents valve cusps from billowing into the atria during contraction?

    <p>Papillary muscle</p> Signup and view all the answers

    Which component of the cardiovascular system is described as weighing around 300g and beating around 100,000 times a day?

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

    What is the purpose of the pericardium in relation to the heart?

    <p>Surrounding and protecting the heart</p> Signup and view all the answers

    In groups, one of the tasks is to draw and label the structure of the _____________.

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

    What is the innermost layer of tissue that lines the chambers of the heart known as?

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

    The successful student should be able to describe the mechanism of ____________ contraction by the end of the lecture and appropriate independent study.

    <p>Heart muscle</p> Signup and view all the answers

    What is the approximate weight of the heart?

    <p>300g</p> Signup and view all the answers

    How many times does the heart beat in a lifetime?

    <p>3 billion</p> Signup and view all the answers

    Which system of the blood vessels is not mentioned in the lecture?

    <p>Lymphatic system</p> Signup and view all the answers

    What surrounds the heart?

    <p>Pericardium filled with fluid</p> Signup and view all the answers

    What is the innermost layer of tissue that lines the chambers of the heart called?

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

    What is the role of autorhythmic cells within the heart?

    <p>Generate minimal contraction and spontaneously generate action potentials</p> Signup and view all the answers

    In the context of heart muscle valves, how many leaflets does the bicuspid valve have?

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

    During which phase of the heartbeat does the heart muscle contract and pump blood from the chambers into the arteries?

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

    What is the function of the chordae tendinae within the heart?

    <p><strong>Prevent valve cusps from billowing into the atria during contraction</strong></p> Signup and view all the answers

    How do the muscle fibres in the cardiac muscle differ from skeletal muscle fibres?

    <p><strong>They have larger mitochondria and are more fatigue-resistant</strong></p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser