Thieme Atlas of Anatomy: Diaphragm Structure and Innervation
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Questions and Answers

What muscle, located in the lower anterior thorax, is responsible for depressing the ribs?

  • External intercostals
  • Internal intercostals
  • Transversus thoracis (correct)
  • Inferior costal muscles
  • Which muscle originates from the xiphoid process and lower body of the sternum?

  • Diaphragm
  • Pectoralis major
  • Transversus thoracis (correct)
  • Intercostal muscles
  • In expiration, which muscle lowers the ribs?

  • Innermost intercostals
  • Subcostal muscles
  • External intercostals
  • Transversus thoracis (correct)
  • Which structure contains the intercostal bundle arranged as vein, artery, and nerve?

    <p>Subcostal groove</p> Signup and view all the answers

    Which muscle lies between the innermost and internal intercostal muscles?

    <p>Transversus thoracis</p> Signup and view all the answers

    What happens to the diaphragm during relaxation?

    <p>Raises up</p> Signup and view all the answers

    What happens to the diaphragm during relaxation?

    <p>It raises up</p> Signup and view all the answers

    Which part forms the broad lower end of the thoracic cage?

    <p>Thoracic outlet</p> Signup and view all the answers

    How many pairs of ribs articulate directly with the sternum?

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

    Which ribs are known as 'floating' ribs?

    <p>Ribs 11 and 12</p> Signup and view all the answers

    What is the superior thoracic aperture also known as?

    <p>Thoracic inlet</p> Signup and view all the answers

    At which vertebral level does the upper border of the manubrium sterni lie?

    <p>T3</p> Signup and view all the answers

    What is the innervation of the diaphragm?

    <p>Phrenic nerve</p> Signup and view all the answers

    Which part of the diaphragm has the most ligaments?

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

    What is the significance of 'T8' and 'T10' in relation to the diaphragm?

    <p>The number of letters in 'vena cava' and 'esophagus'</p> Signup and view all the answers

    Which nerve provides motor innervation to the diaphragm?

    <p>Phrenic nerve</p> Signup and view all the answers

    How are the crura of the diaphragm asymmetrical?

    <p>Right Crus is bigger than Left Crus</p> Signup and view all the answers

    Where does the lateral arcuate ligament attach?

    <p>Quadratus lumborum muscle</p> Signup and view all the answers

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