The Cardiovascular System
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Questions and Answers

What is the approximate weight of the heart?

  • Exactly 1 pound
  • More than 5 pounds
  • Around 2 pounds
  • Less than a pound (correct)

    • Where is the apex of the heart directed?

  • Toward the right shoulder
  • Toward the sternum
  • Toward the spine
  • Toward the left hip (correct)

    • What is the function of the fibrous pericardium?

  • Transmits nerve signals
  • Produces blood cells
  • Helps protect the heart and anchors it to surrounding structures (correct)
  • Regulates blood pressure

    • Where is the heart located within the thorax?

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

    Which layer encloses the heart in a double-walled sac?

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

    Which layer of the heart helps protect the heart and anchors it to surrounding structures?

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

    Where is the broad posterosuperior aspect of the heart, from which the great vessels of the body emerge, directed?

    <p>Toward the right shoulder</p> Signup and view all the answers

    In which cavity of the thorax is the heart snugly enclosed?

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

    Which part of the heart is approximately the size of a person’s fist and weighs less than a pound?

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

    Which layer of the pericardium is referred to as the slippery, two-layer sac where the parietal layer lines the interior of the fibrous pericardium?

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

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