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1、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 MidbrainPonsMedulla oblongata,Medulla oblongata,Ventral surface Pyramid: contain corticosp
2、inal tract Decussation of pyramid: formed by crossing fibers of corticospinal tract Olive: produced by underlying inf.olivary nucleus Anterolateral sulcus: rootlets of hypoglossal N. Retroolivary sulcus: rootlets of glossopharyngeal N. vagus N. accessory N.,Medulla oblongata,Dorsal surface Gracile t
3、ubercle: produced by underlying gracile nucleus Cuneate tubercle: marks the site of cuneate nucleus Inf.cerebellar peduncleObex,Pons,Ventral surface Basilar part Basilar sulcus Bulbopontine sulcus : Abducent N.facial N. vestibulocochlear N. Middle cerebellar peduncle Trigeminal N. Pontocerebellar tr
4、igone : the junction of medulla, pons and cerebellum,Pons,Dorsal surface Sup. cerebellar peduncle Sup. medullary velum Trochlear N.,Midbrain,Ventral surface Crus cerebri Interpeduncular fossa Oculomotor N. emerge from medial of crus cerebri Pos.perforated substance,Midbrain,Dorsal surface Sup. colli
5、culus visual reflexes Inf.colliculus associated with auditory pathway Brachium of sup. colliculi Brachium of inf. colliculi,The characters of internal structure of brain stem,Medulla oblongata,Lower part (closed part) : Two decussations,Decussationsof pyramid,Decussations of medial lemniscus,Medulla
6、 oblongata,Upper part (open part) Appearance : inf.olivary nuculeus inf. cerebellar peduncle Enlargement of central canal to form the 4th ventricle floor,Pons,Tegmentum of pons directed upward continuation of medulla oblongata Basilar part contain both longitudinal and transverse fibers intermixed w
7、ith pontine nuclei,Midbrain,Rectum of midbrain: includes sup.and inf.colliculi Cerebral peduncle Tegmentum : contain ascending tracts, central gray matter, recticular formation and so on,Substentia nigra Crus cerebri : Pyramidal tract middle 3/5 of the crus: Frontopontine tractmedial medial 1/5: par
8、iatotempopontine tract lateral1/5,The basilaris of brain,The basilaris of brain specimen,The basilaris of brain specimen,The transverse section through optic chiasma,The transverse scan of MRI through optic chiasma,the visual pathway,The lateral view of brain,The lateral view of brain,The lateral vi
9、ew of brain specimen,The superior view of brain specimen,The superior view of brain specimen,The superior view of dura mate,The medial surfice of cerebral hemisphere,the ventricular system,The cranial sinuses and cistern,The cranial N.of base of skull,the coronal section through posterior cranial fo
10、ssa,The cranial nerves,The thansvers section of cranium,The transverse section through superior agittal sinus,The transverse section through sup. part of paracentral gyrus,The transverse section through sup. extremity of parietooccipital sulcus,The transverse section through inf.part of paracentral gyrus,The transverse section through semioval center,The transverse section through bulbopontine sulcus,The transverse section through hypoglossal canal,The transverse section through inf. border of foramen magnum,The thansvers scan of cranium by MR1.5T.T1,
