Costal Fibres

• Origin:

  • Arise from the inner surface of the lower 6 ribs and their costal cartilages (interdigitates with transversus abdominis)

  A) costal fibres

  
• Insertion:

  • Inserts into the anterolateral part of the central tendon

  A) costal fibres

  
• Costal Fibres

  • Make up majority of muscle fibres of the diaphragm

  A) costal fibres