Components of Cardiovascular System: Heart & Blood Vessels
18 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the function of the atria in the cardiovascular system?

  • Containing thick layer of smooth muscle in their walls
  • Recoiling to prevent marked drop in arterial blood pressure
  • Pumping blood to the circulation
  • Storing venous return during ventricular systole (correct)
  • Why is the loss of ventricular function considered fatal?

  • It leads to a marked drop in arterial blood pressure
  • It allows backflow of blood in the heart
  • It is essential for pumping blood to the circulation (correct)
  • It affects the resistance to blood flow in arterioles
  • Which valve is present between the left atrium and left ventricle?

  • Aortic valve
  • Tricuspid valve
  • Mitral valve (correct)
  • Pulmonary valve
  • What causes heart sounds in the cardiovascular system?

    <p>Closure of valves</p> Signup and view all the answers

    What is the main function of big elastic arteries like the aorta?

    <p>Expanding during ventricle systole to accommodate blood</p> Signup and view all the answers

    Where is the main site of resistance to blood flow in the cardiovascular system?

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

    Which side of the heart pumps deoxygenated blood to the pulmonary vessels?

    <p>Right ventricle</p> Signup and view all the answers

    Why is the wall of the left ventricle thicker than the wall of the right ventricle?

    <p>To pump blood against resistance in blood vessels</p> Signup and view all the answers

    In which part of the circulatory system does the exchange of gases occur between blood and alveolar air?

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

    What role does the systemic circulation play in the circulatory system?

    <p>Pumping oxygenated blood to tissues and organs</p> Signup and view all the answers

    Which type of vessels carry blood from venules back towards the right atrium?

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

    What is the function of the right ventricle in the cardiovascular system?

    <p>Pumping deoxygenated blood at low pressure to the pulmonary vessels</p> Signup and view all the answers

    What is the main function of capillaries in the cardiovascular system?

    <p>Site of exchange of nutrients, water, and gases between blood and interstitial fluid</p> Signup and view all the answers

    Where is the Sinoatrial (SA) node located in the heart?

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

    Which type of muscle fibers in the heart form the conducting system?

    <p>Autorhythmic fibers</p> Signup and view all the answers

    What is the main function of veins in the cardiovascular system?

    <p>Act as reservoir vessels</p> Signup and view all the answers

    What is the role of Atrioventricular (AV) node in the heart's conduction system?

    <p>Determines heart rate under normal conditions</p> Signup and view all the answers

    Which structure in the heart is known as the 'pacemaker'?

    <p>Sinoatrial (SA) node</p> Signup and view all the answers

    More Like This

    Cardiovascular System Overview Quiz
    12 questions
    Cardiovascular system hard
    10 questions

    Cardiovascular system hard

    WiseTropicalIsland4758 avatar
    WiseTropicalIsland4758
    Use Quizgecko on...
    Browser
    Browser