1. Crohn's disease can be described as a chronic relapsing disease.Which of the following areas in the GI system may be involved with this disease? A. The entire length of the large colon B. Only the sigmoid area C. The entire large colon through the layers of mucosa and submucosa D. The small intestine and colon; affecting the entire thickness ofthe bowel: Answer D. The small intestine and colon; affecting the entire thickness of the bowel Crohn's disease can involve any segment of the small intestine, the colon, or both, affecting the entire thickness of the bowel. Answers 1 and 3 describe ulcerative colitis, answer 2 is too specific and therefore, not likely. 2. Which area ofthe alimentary canal isthe most common location for Crohn's disease? A. Ascending colon B. Descending colon C. Sigmoid colon D. Terminal ileum: Answer D.Terminal ileum Studies have shown that the terminal ileumisthe most common site forrecurrence in clients with Crohn's disease.The other areas may be involved but aren't as common. 3. Fistulas are most common with which of the following bowel disorders? A. Crohn's disease B. Diverticulitis C. Diverticulosis D. Ulcerative colitis: Answer A. Crohn's disease The lesions of Crohn's disease are transmural; that is, they involve all thickness of the bowel.These lesions may perforate the bowel wall, forming fistulas with adjacent structures. Fistulas don't develop in diverticulitis or diverticulosis. The ulcers that occur in the submucosal and mucosal layers of the intestine in ulcerative colitis usually don't progress to fistula formation as in Crohn's disease.