Thorax Large Veins
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Questions and Answers

Which vein is formed by the union of the right subclavian and right internal jugular veins?

  • Right branchiocephalic vein
  • Superior Vena Cava
  • Azygos vein
  • Inferior Vena Cava
  • Which veins carry oxygenated blood to the left atrium of the heart?

  • Inferior Vena Cava
  • Subclavian veins
  • Pulmonary Veins (correct)
  • Superior Vena Cava
  • What is the main component of the Azygos system of veins?

  • Right subclavian vein
  • Right branchiocephalic vein
  • Main Azygos vein (correct)
  • Pulmonary vein
  • Where does the inferior vena cava enter the heart?

    <p>Into the right atrium through the diaphragm</p> Signup and view all the answers

    From which veins is the superior vena cava formed?

    <p>Right and left branchiocephalic veins</p> Signup and view all the answers

    What is the primary function of the aorta?

    <p>To deliver oxygenated blood from the left ventricle of the heart to the tissues of the body</p> Signup and view all the answers

    Where does the ascending aorta begin?

    <p>At the base of the left ventricle</p> Signup and view all the answers

    Which vessels branch from the pulmonary trunk?

    <p>Right pulmonary artery and left pulmonary artery</p> Signup and view all the answers

    What connects the ascending aorta with the descending aorta?

    <p>The arch of the aorta</p> Signup and view all the answers

    What does the descending thoracic aorta become as it passes through the diaphragm?

    <p>Abdominal aorta</p> Signup and view all the answers

    Study Notes

    Large Veins of the Thorax

    • Branchiocephalic Veins
      • Formed by the union of subclavian and internal jugular veins
      • Right branchiocephalic vein: formed by union of right subclavian and right internal jugular veins
      • Left branchiocephalic vein: formed by union of left subclavian and left internal jugular veins
    • Superior Vena Cava
      • Formed by the union of the two branchiocephalic veins
    • Azygos Veins
      • Consist of main Azygos vein, inferior Hemiazygos vein, and superior Hemiazygos vein
    • Inferior Vena Cava
      • Enters the right atrium of the heart through the diaphragm
    • Pulmonary Veins
      • Carry oxygenated blood to the left atrium of the heart

    Large Arteries of the Thorax

    • Aorta
      • Delivers oxygenated blood from the left ventricle of the heart to the tissue of the body

    Ascending Aorta

    • Begins at the base of the left ventricle
    • Has three bulges: sinuses of the aorta, which give rise to the coronary artery

    Arch of the Aorta

    • Forms the connection between the ascending and descending aorta

    Descending Thoracic Aorta

    • Descends through the mediastinum
    • Passes through the diaphragm to become the abdominal aorta
    • Has an aortic opening

    Pulmonary Trunk

    • Conveys deoxygenated blood from the right ventricle of the heart to the lungs
    • Branches
      • Right pulmonary artery: supplies the right lung
      • Left pulmonary artery: supplies the left lung

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    Description

    This quiz covers the major veins found in the thorax region, including branchiocephalic veins, superior vena cava, and azygos veins. It explains their formation and composition.

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