PostBase Mini sets the postage, i.e. the price for the postal product using the chosen. mailing data (destination, type, mail piece dim ensions and additional services if appli-. cable), in conjunction with the displayed weight. Use the shortcuts to fast and easily set up a product.
Peristalsis is a distinctive pattern of smooth muscle contractions that propels foodstuffs distally through the esophagus and intestines. One group of interneurons activates excitatory motor neurons above the bolus-these neurons, which contain acetylcholine and substance P, stimulate contraction of smooth muscle above the bolus. 2  Another group of interneurons activates inhibitory motor neurons that stimulate relaxation of smooth muscle below the bolus.
Robots have been designed that use peristalsis to achieve locomotion, as the earthworm uses it. Related terms. Catastalsis is a related intestinal muscle process. Aperistalsis refers to a lack of propulsion. It can result from achalasia of the smooth muscle involved. Basal electrical rhythm is a slow wave of electrical activity that can initiate a contraction. Ileus is a disruption of the normal propulsive ability of the gastrointestinal tract caused by the failure of peristalsis. Notes and references