What is important of the gastric smooth muscle in the origin of peptic ulcer?
D004381:Duodenal Ulcer / Q000209:etiology; D005769:Gastrointestinal Motility; D006801:Humans; D009130:Muscle, Smooth / Q000033:anatomy & histology / Q000502:physiology*; D010437:Peptic Ulcer / Q000209:etiology*; D013270:Stomach / Q000033:anatomy & histology / Q000502:physiology*