phasic smooth muscle contraction intestine smooth muscle contraction GO:0014827 biological_process A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the intestine. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The intestine is the section of the alimentary canal from the stomach to the anal canal. It includes the large intestine and small intestine. gastro-intestinal system smooth muscle contraction Bacteria Schizosaccharomyces pombe