Physiology CVS-122 Module Lecture 1 Quiz
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Questions and Answers

What is the main function of the circulatory system?

  • Control the body's response to external stimuli
  • Regulate breathing by controlling lung functions
  • Digest food to extract nutrients
  • Maintain homeostasis through transport functions (correct)
  • Which component is NOT included in the cardiovascular system (CVS)?

  • Skin (correct)
  • Blood vessels
  • Lungs
  • Heart
  • What does the heart primarily pump blood into?

  • Stomach
  • Liver
  • Lungs
  • Blood vessels (correct)
  • How does the circulatory system help in maintaining homeostasis?

    <p>By regulating blood flow to control body temperature</p> Signup and view all the answers

    Which of the following is NOT a function of the circulatory system?

    <p>Digestion of food particles</p> Signup and view all the answers

    What is one of the key roles of blood circulation in the body?

    <p>Transporting gases and waste products</p> Signup and view all the answers

    What is the main function of the systemic circulation?

    <p>Transport O2 and nutrients to body tissues</p> Signup and view all the answers

    What is the purpose of pulmonary circulation?

    <p>Gas exchange in the lungs</p> Signup and view all the answers

    Which chamber of the heart pumps blood to the lungs?

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

    What is the function of the myocardium?

    <p>Help fill ventricles with blood through atrial contraction</p> Signup and view all the answers

    Which chamber of the heart receives blood from the body through vena cava?

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

    What is the function of the left atrial wall compared to the right atrial wall?

    <p>It's thinner than the right atrial wall</p> Signup and view all the answers

    What is the main function of arteries?

    <p>Stretching to prevent a marked increase in pressure during systole</p> Signup and view all the answers

    Which vessels contain a thick layer of smooth muscles in their wall?

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

    What controls the diameter of arterioles?

    <p>The autonomic nervous system</p> Signup and view all the answers

    Why are veins referred to as capacitance vessels?

    <p>Because they can accommodate a large volume of blood with little change in pressure</p> Signup and view all the answers

    Which vessels act as a drainage system preventing fluid collection in interstitial tissue spaces?

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

    What is the primary site of exchange between blood and surrounding tissue?

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

    What is the function of atrio-ventricular valves (A-V valves)?

    <p>Separate the atria from the ventricles</p> Signup and view all the answers

    What prevents the eversion of atrio-ventricular valves during ventricular systole?

    <p>Attachment of cusps to papillary muscles by chordae tendinea</p> Signup and view all the answers

    Which part of the heart is formed of four rings of dense connective tissue?

    <p>Fibrous skeleton of the heart</p> Signup and view all the answers

    How many cusps does the Mitral valve have?

    <p>2 cusps</p> Signup and view all the answers

    Which valves allow the flow of blood from ventricles to major arteries?

    <p>Semilunar valves</p> Signup and view all the answers

    Where are the ends of the cusps of A-V valves attached in the heart?

    <p>Papillary muscles by chordae tendinea</p> Signup and view all the answers

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