【正文】
The medical college of shandong university The transverse section of cranium and MRI The basic knowledge of cranial anatomy The brain ? Telencephalon Diencephalon ? Cerebellum ? Brain stem The brain stem Consists of ? Midbrain ? Pons ? Medulla oblongata Medulla oblongata Ventral surface ? Pyramid: contain corticospinal tract ? Decussation of pyramid: formed by crossing fibers of corticospinal tract ? Olive: produced by underlying nucleus ? Anterolateral sulcus: rootlets of hypoglossal N. Retroolivary sulcus: rootlets of glossopharyngeal N. ? vagus N. ? accessory N. Medulla oblongata Dorsal surface – Gracile tubercle: produced