human digestive system icon, stomach digestion

abstract art background bowel cartoon clip clipart colon concept constipation design diarrhea diet digestion digestive fast flat gastro gastroenterologist gastroenterology gastrointestinal gear gears good graphic graphics gut health healthy help how human icon icons illustration improve internal intestinal intestine intestines isolated logo logos medical microflora organ outline poster probiotics problem process robust sign signs silhouette smooth stomach stomaches symbols system tract vector web wheel wheels white works your