#pulmonary_vein__pulmonaryvein__vena_pulmonalis  any of four veins that carry arterial blood from the lungs to the left atrium of the heart
  supertype:  #vein__vena  a blood vessel that carries blood from the capillaries toward the heart; all veins except the pulmonary carry unaerated blood
  part of:  #lung
  subtype:  #inferior_pulmonary_vein__vena_pulmanalis_inferior  either of two pulmonary veins (left and right) returning blood from the inferior lobes of the lungs
  subtype:  #superior_pulmonary_vein__vena_pulmonalis_superior  either of two pulmonary veins (left and right) returning blood from the superior lobes of the lungs

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