37. Medulla -External Features
Include prominent ridges and grooves on its anterior (ventral) and posterior (dorsal) surfaces, such as the anterior median fissure, paired pyramids (containing corticospinal tracts), and oval olives, with cranial nerves emerging from sulci between them, while the dorsal side shows the posterior median sulcus, gracile and cuneate tubercles, and inferior cerebellar peduncles, all connecting to the spinal cord and cerebellum.