20 lines (10 with data), 386 Bytes

///Definitions of the muscles on the left side
MusclesSpineLeft = {

  #include "MultifidiLeft.any"

  #include "ErectorSpinaeLeft.any"

  #include "PsoasMajorLeft.any"

  #include "QuadratusLumborumLeft.any"

  #include "ObliquusExternusLeft.any"
 
  #include "ObliquusInternusLeft.any"
      
  #include "ThoracicMultifidiLeft.any"
  
}; // End of MuscleSpineLeft