#thyroid_vein__thyroidvein__vena_thyroidea  any of several small veins draining blood from the thyroid area
  supertype:  #vein__vena  a blood vessel that carries blood from the capillaries toward the heart; all veins except the pulmonary carry unaerated blood
  subtype:  #inferior_thyroid_vein  any of several veins on each side that drain the thyroid gland and empty into the innominate vein
  subtype:  #middle_thyroid_vein  a vein on each side that drains the lateral part of the thyroid and empties into the internal jugular vein
  subtype:  #superior_thyroid_vein  a vein on each side that drains the upper part of the thyroid and empties into the internal jugular vein

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