The zone is named after one of the diagnostic species. Oppel zones are thus more flexible and subjective than concurrent range zones in the rigorously applied sense of that term, although the term âconcurrent range zoneâ is commonly used for what is, in fact, an Oppel zone.Cite this article. Pick a style below, and copy the text for your bibliography.he zone is named after one of the diagnostic species. Oppel zones are more flexible and subjective than concurrent range zones in the rigorously applied sense of that term, although âconcurrent range zoneâ is commonly used for what is in fact an Oppel zone. Cite this article.
The most frequent causes of abdominal pain are gastroenteritis (13%), irritable bowel syndrome (8%), urinary tract problems (5%), inflammation of the stomach (5%) and constipation (5%). In about 30% of cases, the cause is not determined.
While there are too many causes for stomach aches to list here, some of the most common reasons are listed, as well as common âcures.â. Oftentimes the cause of a stomach ache is not the stomach at all. Stomach aches are often caused from some type of problem in the digestive tract.