大鼠神经垂体进行电镜观察,旨在探讨其神经分泌轴突的形态学特点.结果表明,神经垂体中有A、B两型神经分泌纤维.二者之间主要差别在于其膨体中所含神经分泌颗粒不同.A型纤维的膨体为抗利尿激素或催产素贮存和释放部位,根据膨体中细胞器的差别又可分为6个亚型.每一亚型均代表特异的功能状态.B型纤维膨体的形态较一致,无亚型,但可形成突触. Electrophysiological observation of the neurohypophysis in rats was carried out to investigate the morphological characteristics of the neurosecretory axons.The results showed that neurohypophysis had type A and type B neurosecretory fibers.The main difference between the two was that Different neurosecretory granules.A type of fiber bulge for vasopressin or oxytocin storage and release site, according to the differences in organelles can be divided into six subtypes.Each subtype represents a specific functional status. Type B fiber bulks more consistent form, no subtype, but can form synapses.