1 As a gas, water takes the form of steam. 2  In steam, molecules move around at high speeds, independently of each other. 3  Because the molecules are not bound to each other, a gas has no fixed shape or fixed volume.
Split and merge into it. Answered by The Community. Making the world better, one answer at a time. the part of the alimentary canal responsible for peristalsis is the oesophagus or the food pipe.by wave like movements of the smooth muscles on the wall of the food pipe the food is sent to the stomach.he four basic tissue layers of the alimentary canal are: Mucosa, Submucosa, Muscularis externa, and the Serosa. From outer to inner: serosa, external muscle layer consisting of  outer circular and inner longitudinal, submucosa and mucous  membrane. 28 people found this useful.
1 Peristaltic contractions are always preceded by inhibition that, in the case of primary peristalsis, is called deglutitive inhibition. 2  Peristalsis in the striated muscle part of the esophagus is dependent on central mechanisms, involving sequential activation of vagal lower motor neurons in the vagal nucleus ambiguus.sophageal peristalsis consists of sequential contraction of the circular muscles of the muscularis propria, which is largely mediated by acetylcholine. This sequential contraction serves to occlude the esophageal lumen and push the bolus aborally.