MORPHOLOGICAL CHANGES OF RATS MUSCLES AT VARIOUS POSTMORTEM INTERVALS BY SCANNING ELECTRON MICROSCOPY  

作　　者：廖志钢 易旭夫 肖飞 彭雪梅 

出　　处：《Chinese Medical Sciences Journal》1999年第4期255-258,共4页中国医学科学杂志（英文版）

摘　　要：The aim of this study was to observe the morphological changes of muscle in the process of rigor mortis. The quadriceps of 40 rats at various postmortem intervals were observed under the scanning electron microscope(SEM) and the light microscope by phosphotungstic acid haematoxylin(PTAH) stain. The results showed that the striations of muscle were blurred within 4 h, but they became apparent from 6 h to 24 h after death. The authors suggest that this phenomenon be associated with the increased resistance of muscle against the postmortal changes. The observations by scanning electron microscopy and light microscopy have revealed that the muscles do contract in the process of rigor mortis because the distance between two Z lines shortens and the I band narrows, compared with those in anaesthetised animals. The basic biochemical process for the formation of rigor mortis is the same as that of muscle contraction except that the former happens postmortem and the latter antemortem.

关 键 词：rigor  mortis muscle  contraction scanning  electron  microscopy 

分 类 号：R339.39[医药卫生—人体生理学]