人鼻腔粘膜的微血管立体构型——扫描电子显微镜观察

本文应用微血管腐蚀铸型—扫描电镜观察的方法,研究了2例幼几鼻腔粘膜区的微血管系统的立体构型。在扫描电镜下,初级微动脉互相吻合形成初级微动脉拱,次级微动脉互相吻合形成次级微动脉拱,两种微动脉拱类似“立体桥”外型式配布。毛细血管网的构型各有特点,在鼻前庭区其形态分两类:①螺旋形毛细血管袢;②多袢形毛细血管树。鼻道区的毛细血管网呈重叠式配布。在粘膜的基底面,可见有动脉与静脉伴行。毛细血管从不同方向和不同空间注入微静脉。本文还论述了鼻粘膜区微血管的类型与生理功能的关系,对认识鼻粘膜区的微循环特征和鼻病的过程有一定的临床意义。

THREE-DEMENSIONAL OBSERVATIONS OF MICROVASCUIATURE OF NASAL MUCCSA BY SCANNING ELECTRON MICROSCOPE

The circulational pattein in nasal mucesal of 2 babies and relationshipof mucosal capillaties to mucosal function were investigated. Techniquesused is the mic?ovascular corrosion cast/scanning election mic. osope (SEM).The cast were prepared by perfusion of perchlorcethylene. The anastomesesof the primary artericles fo?med the p?maiy a?te?icle arcaces; that ofthe seconda y a?tericle formed the secondary artericle arcades. The two arca-des seem to be the configuration of a stereo-bridge.The capillary meshwoiks hadvery different cha. acteristics cne from another. The capillary lcops of spi?al-type and the capillary trees of many-loop-shapes were in the nasal v stibulethe caaillary netwoiks were the a? angement of a overlappingl. ke in the meatusof nose A view of the base of the nasal mucosa from its submuc. sal side shewedthat the a? tericle and venule lan in parallol paiis. The fine architecture of thenasal mucosa obsered was discussed in terms of mierocirculation and the signi-ficance in the physiological function of nasal mucosa.