Final answer:
The large intestine evacuates waste through elimination, which includes water reabsorption, fecal compaction, peristaltic movements, and the regulated release by two sphincters.
Step-by-step explanation:
The large intestine uses a process called elimination to evacuate waste products from the body. This involves the reabsorption of water from undigested food material and the compacting of waste into feces. The feces are stored in the rectum until they are propelled using peristaltic movements to the anus for evacuation. The evacuation process is controlled by two sphincters located between the rectum and the anus. The inner sphincter operates involuntarily, while the outer sphincter is under voluntary control, allowing for the regulated release of waste materials.
As the rectum fills, it triggers the neural signals required to set up the urge to eliminate, and the solid waste is eliminated through the anus using peristaltic movements of the rectum.