豚鼠内淋巴管与内淋巴囊微血管模式及解剖差异

The vascular pattern of the endolymphatic duct,endolymphatic sac and lts anatomic differences in guinea pigs

为研究内淋巴管及内淋巴囊微血管分布模式，通过墨汁血管灌流技术和图像分析方法对１０只豚鼠的颞骨（２０侧）内淋巴管和内淋巴囊做全面观察分析。结果：①２０侧颞骨中有１７侧（８５％）内淋巴管、内淋巴囊有脑膜后动脉和前庭后动脉两条供血来源，其余３侧（１５％）则发现前庭后动脉缺如；②脑膜后动脉在内淋巴囊的分布频率明显高于前庭后动脉（Ｐ＜０．０１），但两者在内淋巴管的分布频率差异无显著性（Ｐ＞０．０５）。结论：内淋巴管、内淋巴囊的血供来源及微血管分布模式存在一定的解剖差异。

In order to study the vascular pattern of the endolymphatic duct and sac, endolymphatic duct and sac were examimed with vascular Indian ink injection and image analysis. The Results were as follows: ①In the 20 temporal bones, 17(85%) had posterior meningeal artery (PMA)and posterior vestibular artery (PVA)supply and the rest (3 specimens ,15%)had no PVA supply; ②The distribution frequency of PMA in the endolymphatic sac was much higher than that of PVA( P <0.01),but the distribution of PMA and PVA in the endolympatic duct were not different ( P > 0.05). The conclusions is that there are anatomic differences in vascular supply and pattern of the endolymphatic duct and sac, PMA is the main vascular structure in the endolymphatic sac.