Answer Happy

Laxatives and cathartics are used to induce defecation for treatment of constipation or to evacuate the bowel for diagnostic testing. Match the type of agent with its mechanism of action. osmotic laxatives Sodium and magnesium ions draw water into the intestine resulting in increased pressure and volume in the colon and stimulation of defecation Absorb free water in the intestinal tract to oppose dehydrating forces and add volume as non-digestible fiber bulk-forming laxatives Increase peristaltic action of the intestines acting as a cathartic/purgative stimulant laxatives Detergent-like properties hold water in fecal matter making it softer and easier to pass; emollients or surfactants stool softeners