Diaphragm 3D

  • Description                                                                
    • * Is a dome-shaped muscle forming the partition between the thoracic and abdominal cavities.
    • * Is the chief muscle of respiration.
    • * Arises from the xiphoid process (sternal part), lower six costal cartilages (costal part), medial and lateral lumbocostal arches (lumbar part), vertebrae L1 to L3 for the right crus, and vertebrae L1 to L2 for the left crus.
    • * Inserts into the central tendon and is the principal muscle of inspiration.
    • * The phrenic nerves are the sole motor nerves to the diaphragm (ventral rami C3, C4, C5).
    • * The phrenic nerves are sensory to the central part, and the lower six thoracic nerves are sensory to the peripheral part of the diaphragm.

                                                                                                                           

  • Right Crus:
    • * Originates from vertebrae L1 to L3.
    • * Splits to enclose the esophagus and is larger and longer than the left crus.

                                                                                                                            

  • Left Crus:
    • * Originates from vertebrae L1 to L2.
    • * Right crus is larger and longer than the left crus.

                                                                                                                                      

  • Medial Arcuate Ligament:
    • * Is the medial lumbocostal arch.
    • * Extends from the body of L1 to the transverse process of L1 and passes over the psoas muscle and the sympathetic trunk.

                                                                                                                                        

  • Lateral Arcuate Ligament:
    • * Is the lateral lumbocostal arch.
    • * Extends from the transverse process of L1 to rib 12 and passes over the quadratus lumborum.

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  • Description                                                                
    • * Is a dome-shaped muscle forming the partition between the thoracic and abdominal cavities.
    • * Is the chief muscle of respiration.
    • * Arises from the xiphoid process (sternal part), lower six costal cartilages (costal part), medial and lateral lumbocostal arches (lumbar part), vertebrae L1 to L3 for the right crus, and vertebrae L1 to L2 for the left crus.
    • * Inserts into the central tendon and is the principal muscle of inspiration.
    • * The phrenic nerves are the sole motor nerves to the diaphragm (ventral rami C3, C4, C5).
    • * The phrenic nerves are sensory to the central part, and the lower six thoracic nerves are sensory to the peripheral part of the diaphragm.

                                                                                                                           

  • Right Crus:
    • * Originates from vertebrae L1 to L3.
    • * Splits to enclose the esophagus and is larger and longer than the left crus.

                                                                                                                            

  • Left Crus:
    • * Originates from vertebrae L1 to L2.
    • * Right crus is larger and longer than the left crus.

                                                                                                                                      

  • Medial Arcuate Ligament:
    • * Is the medial lumbocostal arch.
    • * Extends from the body of L1 to the transverse process of L1 and passes over the psoas muscle and the sympathetic trunk.

                                                                                                                                        

  • Lateral Arcuate Ligament:
    • * Is the lateral lumbocostal arch.
    • * Extends from the transverse process of L1 to rib 12 and passes over the quadratus lumborum.

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Anatomy (Beta)

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