KEY WORDS Lobes 叶 (frontal 额叶,temporal 颞叶,parietal 顶叶,occipital 枕叶); parietooccipital fissure 顶枕裂 TEXT / 课文 The surface of the brain is divided into several lobes. The frontal lobes are in the frontal fossa. The temporal lobes are in the middle fossa. The parietal lobes extend from the primary fissure back to parietooccipital fissure which is the boundary between the primary motor and sensory cortices. The occipital lobes are the most posterior portion of the cerebrum. The cerebellum has two lobes. 大脑的表面被分成几个叶。额叶在颅前窝。颞叶位于颅中窝。顶叶位于中央沟和顶枕裂之间。枕叶位于大脑最后部。小脑分为两叶。