ObjectiveTo study the Effects of stimulant laxative on the ultrastructure of rats colonic myenteric nerve plexus,and the mechanisms about the occurrenc and development of chronic constipation.

• 目的本实验主要研究刺激性泻剂对大鼠结肠肌间神经丛超微结构的影响及其在慢性便秘发生、发展过程中的作用机制。