has_part has part has part continuous with continuous_with continuous with contributes to morphology of brain medulla oblongata midbrain tegmentum spinal cord brainstem lamina medullaris incompleta pallidi brain stem lamina pallidi incompleta truncus encephalicus Stalk-like part of the brain that includes amongst its parts the medulla oblongata of the hindbrain and the tegmentum of the midbrain[ZFA,MP,generalized]. lamella pallidi incompleta truncus encephali lamina medullaris accessoria accessory medullary lamina of pallidum regional part of brain structure with developmental contribution from neural crest