Mechanical obstruction (Intussusception) - correct answer-Sudden or gradual and partial or complete blockage of intestinal contents in intestines Causes of mechanical obstruction - correct answer-foreign bodies, tumors, adhesions, hernias, intussusception (telescoping), volvulus, strictures, Crohn's disease, diverticulitis, Hirschsprung's disease, and fecal impaction Causes of functional obstruction - correct answer-neurologic impairment; intraabdominal surgery complications; chemical, electrolyte, and mineral disturbances; infections; abdominal blood supply impairment; renal and lung disease; and medications (e.g., narcotics) peritonitis - correct answer-inflammation of the peritoneum (membrane lining the abdominal cavity and surrounding the organs within it) Why does the abdomen become rigid with peritonitis? - correct answer-Due to inflammation And abdominal muscle spasms Ulcerative colitis V Chron's - correct answer-UC: - Condition in mucosa only - Begins in the rectum and then extends to the entire colon