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The Diaphragm

These are the Let's Refresh slides for the Diaphragm. The corresponding video can be found at
www.thefunkyprofessor.com

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The Diaphragm

  1. 1. The Diaphragm
  2. 2. The Diaphragm Is a muscular-tendinous structure used in respiration www.biodigital.com
  3. 3. The Diaphragm It is dome-shaped and separates the Thoracic and Abdominal Cavity Is a muscular-tendinous structure used in respiration www.biodigital.com
  4. 4. The Diaphragm It is dome-shaped and separates the Thoracic and Abdominal Cavity Is a muscular-tendinous structure used in respiration It’s muscle fibres arise from the inner surface of the inferior aperture of the Thoracic Cage www.biodigital.com
  5. 5. Quadratus Lumborum Psoas Major L2 L3 L4 Inferior view of Diaphragm
  6. 6. Quadratus Lumborum Psoas Major L2 L3 L4 The muscle fibres arise from Inferior view of Diaphragm
  7. 7. Lateral Arcuate Ligament Quadratus Lumborum Psoas Major L2 L3 L4 The muscle fibres arise from Lateral Arcuate Ligament Inferior view of Diaphragm
  8. 8. Lateral Arcuate Ligament Quadratus Lumborum Psoas Major Medial Arcuate Ligament L2 L3 L4 The muscle fibres arise from Lateral Arcuate Ligament Medial Arcuate Ligament Inferior view of Diaphragm
  9. 9. Lateral Arcuate Ligament Quadratus Lumborum Psoas Major Medial Arcuate Ligament L2 L3 L4 The muscle fibres arise from Lateral Arcuate Ligament Medial Arcuate Ligament Lumbar Vertebral Bodies: Inferior view of Diaphragm
  10. 10. Lateral Arcuate Ligament Quadratus Lumborum Psoas Major Medial Arcuate Ligament L2 L3 L4 Left Crus Right Crus The muscle fibres arise from Lateral Arcuate Ligament Medial Arcuate Ligament Lumber Vertebral Bodies: • Left Crus - L2, L3 • Right Crus - L2, L3, L4 Inferior view of Diaphragm
  11. 11. Lateral Arcuate Ligament Quadratus Lumborum Psoas Major Medial Arcuate Ligament L2 L3 L4 Left Crus Right Crus Peripheral muscle fibres converge into the Central Tendon Inferior view of Diaphragm
  12. 12. Antero-posterior view Plain chest radiograph
  13. 13. Antero-posterior view Plain chest radiograph Diaphragm appears as a “double dome”
  14. 14. Antero-posterior view Plain chest radiograph Diaphragm appears as a “double dome” Central diaphragm is indented by the Fibrous Pericardium
  15. 15. Three Openings of the Diaphragm Inferior view of Diaphragm
  16. 16. Three Openings of the Diaphragm Aortic Hiatus Transmits Descending Thoracic Aorta Inferior view of Diaphragm
  17. 17. Three Openings of the Diaphragm Aortic Hiatus Transmits Descending Thoracic Aorta Venal Caval Hiatus Transmits Inferior Vena Cava Inferior view of Diaphragm
  18. 18. Three Openings of the Diaphragm Aortic Hiatus Transmits Descending Thoracic Aorta Venal Caval Hiatus Transmits Inferior Vena Cava Oesophageal Hiatus Transmits Oesophagus Inferior view of Diaphragm
  19. 19. Vertebral Level of Diaphragm Hiatus
  20. 20. Vertebral Level of Diaphragm Hiatus Aorta 12th Thoracic vertebral body
  21. 21. Aorta 12th Thoracic vertebral body Oesophageal Hiatus 10th Thoracic vertebral body Vertebral Level of Diaphragm Hiatus
  22. 22. Aorta 12th Thoracic vertebral body Vena Caval Hiatus 9th Thoracic vertebral body Oesophageal Hiatus 10th Thoracic vertebral body Vertebral Level of Diaphragm Hiatus
  23. 23. The Phrenic Nerve innervates the Diaphragm Left Phrenic NerveRight Phrenic Nerve www.biodigital.com
  24. 24. The Phrenic Nerve innervates the Diaphragm Left Phrenic NerveRight Phrenic Nerve Cervical Plexus Originates from the Cervical Plexus and runs down the neck behind the carotid sheath www.biodigital.com
  25. 25. The Phrenic Nerve innervates the Diaphragm Left Phrenic NerveRight Phrenic Nerve Cervical Plexus Originates from the Cervical Plexus and runs down the neck behind the carotid sheath Superior Mediastinum Enters Thoracic Cavity in the Superior Mediastinum www.biodigital.com
  26. 26. The Phrenic Nerve innervates the Diaphragm Left Phrenic NerveRight Phrenic Nerve Cervical Plexus Originates from the Cervical Plexus and runs down the neck behind the carotid sheath Superior Mediastinum Enters Thoracic Cavity in the Superior Mediastinum Inferior Mediastinum Crosses the Mediastinum to the Diaphragm and supplies all the diaphragmatic fibres on that side www.biodigital.com
  27. 27. The Phrenic Nerve innervates the Diaphragm Left Phrenic NerveRight Phrenic Nerve Cervical Plexus Sensory Phrenic Nerve fibres are distributed in the Mediastinum www.biodigital.com
  28. 28. Cervical Root Value of Phrenic Nerve C3 C4 C5 www.biodigital.com
  29. 29. Cervical Root Value of Phrenic Nerve C3 C4 C5 C-3, 4, 5 keeps the Diaphragm alive www.biodigital.com

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