A fluorescence and electron microscopic study of the adrenergic innervation in the vestibular ganglion and sensory areas.
A fluorescence and electron microscopic study of the adrenergic innervation in the vestibular ganglion and sensory areas.
复制标题
前庭神经节和感觉区肾上腺素神经支配的荧光和电子显微镜研究。
作者：
O. Densert
用荧光显微镜和电镜技术研究了家兔和猫前庭神经节和感觉区的肾上腺素能神经支配。肾上腺素能神经纤维均由同侧颈上级神经节的节后轴突组成。在家兔，节后神经纤维通过颈动脉丛。可能由于猫颈内动脉不发达的解剖学差异，猫内耳的交感神经纤维均经鼓室丛传入。前庭神经节内肾上腺素能神经纤维分布均匀，兔和猫的分布方式无差异，既有连续的血管神经支配，也有不依赖血管的神经支配。肾上腺素能神经支配延伸到感觉区，但似乎没有穿透基底膜，没有发现肾上腺素能神经末梢与感觉或分泌细胞直接接触。
The adrenergic innervation in the vestibular ganglion and sensory areas in rabbit and cat was studied with fluorescence and electron microscopic techniques. All adrenergic nerve fibres consisted of postganglionic axons from the ipsilateral superior cervical ganglion. In rabbit, postganglionic nerve fibres passed via the carotic plexus. Probably because of the anatomical difference, the feline internal carotic artery being rudimentary, all sympathetic nerve fibres to the inner ear in cat passed via the tympanic plexus. In the vestibular ganglion there was a uniform distribution of adrenergic nerve fibres and there was no difference in distribution patterns between rabbit and cat. There was a continuous blood vessel innervation and an innervation independent of blood vessles. The adrenergic innervation extended to the sensory areas but did not seem to penetrate the basement membrane and no adrenergic nerve terminals were found in direct contact with sensory or secretory cells.