压力对兔肠系膜上静脉形态的影响  

The Effect of Pressure on the Morphology of Superior Mesenteric Wein in Rabbits

作　　者：成海平[1] 刘正津[2] 邹昭文[3] 

机构地区：[1]第三军大学西南医院康复科生物力学实验室,重庆400038 [2]第三军医大学基础部解剖教研室,重庆400038 [3]重庆建筑大学理论力学教研室,重庆400034

出　　处：《生物医学工程学杂志》1998年第4期348-350,355,共4页Journal of Biomedical Engineering

摘　　要：采用恒压固定的方法，研究兔肠系膜上静脉（ＳＭＶ）的形态特点及门脉高压时的压力峰值对其形态的影响，结果表明：ＳＭＶ的管壁形态与人脐带静脉的结构很相似，是介于股动脉与股静脉之间的结构。在４ｋＰａ内压固定下，内弹力膜被拉直。管壁变薄，管壁平滑肌层厚度由５１．６８００μｍ变为３２．３２６０μｍ，细胞核长径由１．９１４６μｍ变为３．４９８０μｍ，短径由０．７８８４μｍ变为０．５２２８μｍ。管壁张力主要沿平滑肌纵轴产生拉应力。The effect of pressure on the morphology of the superior mesenteric vein of rabbits (SMV) was researched with the method of constant pressure fixation. The results indicate the morpholgy of SMV is similar to human umbilical cord vein. It looks like the structure of femoral artery of vein in many ways. Under constant pressure fixation (4kPa), the internal elastic membrane of SMV is straightened, and the wall of SMV becomes thin, with its media thinning from 51.680μm to 32.3260μm. The long diameter of nucleus of the smooth muscles decreases from 1.9146μm to 3.4980μm, the short diameter of nucleus of the smooth muscles becomes from 0.7884μm to 0.5228μm. The direction of the tension on the smooth muscles is mainly longitudinal.

关 键 词：肠系膜上静脉 压力 SMV 兔 

分 类 号：R331.34[医药卫生—人体生理学] R318.01[医药卫生—基础医学]