movement of muscles to move the bolus downward
This is a very good question but an easy one to answer at that. First of all when food is chewed in your mouth and moistened by salivary amylase (saliva) this is called a bolus. The bolus then gets routed down the esophagus via perstalisis (muscular contraction) to the stomach. The stomach secrets digestive enzymes and hydrochloric acid which "bleach" the bolus into its natural components (carbs lipids proteins). These components get absorbed by the small intestine and the waste product (chyme) remains to be passed onto the large intestine. Eventually the large intestine routes this chyme through its 5 foot plumbing absorbing all water that was used to turn the food to bolus and the bolus to chyme. At the same time probiotic bacteria inside the large intestine begin to break down the chyme; using it for its sugars and minerals and in return give the body essential vitamins back. Once the chyme has been fully decomposed by bacteria it can be excreted from the rectum to the anus. This object that contains the decomposed chyme as well as cultures of bacteria is called feces. SO THUS, THE ANSWER TO YOUR QUESTION IS: YES, CHYME TURNS TO FECES WITH THE ADDITION OF BACTERIAL CULTURES. Hope this helps! :)