肠管的运动是如此地有规律，以致调控的具体机制常常被忽略。肠管的收缩性是由肠壁中的平滑面细胞内的钙离子浓度决定的。后者又受肠壁中神经回路非神经节律生成细胞的影响。Ｓｔｅｖｅｎ等报告应用一种新的方法，在自然肠管活动中，对整个结肠节段监测其内部的钙离子浓度变化 Intestinal tube movement is so regular, so that the specific mechanism of regulation is often neglected. Bowel contractility is determined by the concentration of calcium ions in the smooth surface cells of the intestinal wall. The latter is affected by the non-neuronal rhythms of the neural circuits in the intestinal wall. Steven et al reported a new method to monitor changes in the internal calcium concentration of the entire colon segment during natural bowel movements