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咽鼓管粘膜由二层松散的上皮下毛细血管网组成,研究这种毛细血管的微细结构和其通透性,对了解咽鼓管对中耳的影响很重要。本文作者利用辣根过氧化酶(HRP)透过毛细血管内皮扩散到其周围空隙的作用,将其作为示踪剂注入猫的静脉,对其咽鼓管上皮下毛细血管的结构和其通透性进行了研究。结果发现,在光镜下,当注射HRP10分钟后,在咽鼓管咽端2/3粘膜上皮下的固有层内充满HRP,而在咽鼓管鼓室端1/3处毛细血管周围的空隙中,没有发现HRP的反应物。在电镜下发现,所有咽鼓管上皮下毛细血管均为连续性内皮。在咽鼓管咽
Eustachian tube mucosa from the two layers of loose subepithelial capillary network composition, the study of the capillary structure and permeability of the eustachian tube to understand the impact of the middle ear is very important. The authors use horseradish peroxidase (HRP) through the capillary endothelium to diffuse into the surrounding space role, as a tracer injected into the cat’s vein, its eustachian tube capillary structure and its permeability Sexuality has been studied. The results showed that, under the light microscope, HRP was injected into the lamina propria 2/3 of the pharyngeal end of the eustachian tube 10 minutes after injection of HRP, and in the voids around the capillary 1/3 of the end of the eustachian tube tympanic cavity , No HRP reactants were found. Electron microscope found that all eustachian tube capillary under the skin are continuous endothelium. Eustachian tube pharynx