Problem
1. Mrs. Jones, a 69-year-old widow, is complaining of constipation. She asks you what causes this. How would you reply? How would you advise her to resolve this issue?
2. Two men have observed blood in their stool. One states that the blood is bright red. The other claims his stool is black. Could they both be correct?
3. Analyze why genetic or immune factors, rather than infectious agents, are hypothesized to be the cause of ulcerative colitis.
4. Why does the dumping syndrome occur after some gastric surgeries?