part of anatomical structure morphogenesis medulla oblongata development hindbrain morphogenesis medulla oblongata morphogenesis biological_process myelencephalon morphogenesis GO:0021579 The process in which the anatomical structure of the medulla oblongata is generated and organized. The medulla oblongata lies directly above the spinal cord and controls vital autonomic functions such as digestion, breathing and the control of heart rate. medulla morphogenesis