Thebrainstem,Thebrain,Telencephalon端脑Diencephalon间脑Cerebellum小脑Brainstem脑干,Thebrainstem,ConsistsofMidbrainPonsMedullaoblongata,Medullaoblongata延髓,VentralsurfacePyramid锥体:containpyramidaltract(corticospinaltract)Decussationofpyramid锥体交叉:formedbycrossingfibersofcorticospinaltractOlive橄榄:producedbyunderlyinginferiorolivarynucleusAnterolateralsulcus前外侧沟:rootletsofhypoglossalnerveemergefromitRetroolivarysulcus橄榄后沟:rootletsofglossopharyngeal,vagusandaccessorynervesemergefromit,Medullaoblongata,Dorsal