Thebrainstem,山东大学医学院解剖教研室李振华,Thebrain,Telencephalon端脑Diencephalon间脑Cerebellum小脑Brainstem脑干,Thebrainstem脑干,ConsistsofMidbrain中脑Pons脑桥Medullaoblongata延髓,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