Lecture 21: Position & Walls of the Heart
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Questions and Answers

Which of the following vessels carries deoxygenated blood to the right atrium from the upper body and limbs?

  • Coronary sinus
  • Inferior vena cava
  • Pulmonary veins
  • Superior vena cava (correct)
  • How many pulmonary veins transport oxygenated blood from the lungs to the left atrium?

  • 6
  • 2
  • 3
  • 4 (correct)
  • Which of the following vessels transports deoxygenated blood from the right ventricle to the lungs?

  • Superior vena cava
  • Aorta
  • Inferior vena cava
  • Pulmonary trunk (correct)
  • Which of the following vessels transports oxygenated blood from the left ventricle to the body?

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

    What is the name of the structure that separates the upper and lower chambers of the heart?

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

    Which part of the heart includes the right atrium and both ventricles?

    <p>Anterior wall</p> Signup and view all the answers

    What is the portion of the heart that rests on the diaphragm known as?

    <p>Inferior wall</p> Signup and view all the answers

    Which part of the heart is described as the largest muscular wall in depth and size?

    <p>Posterolateral wall</p> Signup and view all the answers

    To which anatomical landmark is the fibrous pericardium attached?

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

    Which part of the heart is mainly the tip of the left ventricle?

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

    What is the protective outer sac of tough dense connective tissue that attaches the heart to the diaphragm called?

    <p>Fibrous Pericardium</p> Signup and view all the answers

    What is the name of the inner serous layer of the pericardium that is attached to the heart surface?

    <p>Visceral pericardium</p> Signup and view all the answers

    What is the purpose of the pericardial cavity?

    <p>To lubricate the heart and reduce friction during pumping</p> Signup and view all the answers

    Which of the following grooves or depressions can be observed on the surface of the heart?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the outermost layer of the heart wall?

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

    Which layer of the heart wall has special conduction capabilities?

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

    Which blood vessels enter and exit the heart?

    <p>All of the above</p> Signup and view all the answers

    What are Trabeculae Carneae?

    <p>Muscular ridges projecting from the inner surface of the ventricle</p> Signup and view all the answers

    What is the function of Papillary Muscles?

    <p>Prevent backflow and inversion of valves</p> Signup and view all the answers

    Which valve is also known as the Right AV valve?

    <p>Tricuspid valve</p> Signup and view all the answers

    What structures prevent suction in the ventricle due to a flat surface membrane?

    <p>Trabeculae Carneae</p> Signup and view all the answers

    What do Chordae Tendineae do in relation to the valves?

    <p>Attach papillary muscles to cuspid valves</p> Signup and view all the answers

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