#muscular_structure__musculature__muscle_system  the muscular system of an organism
  supertype:  system.body_part  a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"
  subtype:  midriff  esophagus
  part of:  musculoskeletal_system
  part:  muscular_tissue__muscle  animal tissue consisting predominantly of contractile cells
  part:  ligament  a sheet or band of tough fibrous tissue connecting bones or cartilages or supporting muscles or organs
  part:  tendon__sinew  a cord or band of inelastic tissue connecting a muscle with its bony attachment

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