大鼠视上核的微细构筑  

TheCytoarchitectonicsofaSupraopticNeuroninRat

作　　者：袁德霞[1] 董兰凤[1] 范莉英[1] 苏丽英[1] 陈琼 李陈莉[1] 刘贵生[1] 

机构地区：[1]河北医科大学

出　　处：《中华物理医学杂志》1996年第1期18-20,I004,共4页Chinese Journal of Physical Medicine and Rehabilitation

摘　　要：应用透射电镜观察丘脑下部视上核的超微结构。发现大小神经元胞质内皆充满神经分泌粒及致密芯小泡，两者均见外排。颗粒可沿轴索微丝、微管顺轴浆流直达正中隆起。毛细血管内皮为穿孔隔膜型，外有胶原原纤维，缺少胶质膜，这与其它脑区血—脑屏障结构显然不同。突触为Ⅱ型非对称性。无髓串珠状神经分泌纤维充满于视上核。UltrastructurefeatursofsupraopticneuroninratwasstudiedbyTEM.Numerousneurose-cretorygranules(NSG)ofvarioussizeandafewofdense-corevesiclescatteredthroughoutthecytoplasmaandthesegranulesappeartoexocytosisinclosetocytoplasmamembrane,respectively.TheNSGcarriedbyaxoplasmictransportalongmicrotubularandfilamentsofaxontomediateeminence,whereNSGcanbere-leasedinnerveswiling.Manygolgicomplexarangesurroundthemitochondriawithtubuleorlaminacrista.Mostsynapteswereaxondendriacontractofasymmetricwhichhaveroundclearvesiclesanddense-corevesi-cleinpresynapticelements.Fenestratedcapilarywithathindiaphragmandcontinuedunderliebasementlaminabutthegilamembranewereabsent.Thecorrectionofstructurecharacteristicwithfunctionwasdis-cussedinthearticle.

关 键 词：神经分泌颗粒 致密芯小泡 外排 视上核 大鼠 

分 类 号：R338.27[医药卫生—人体生理学]