The absorption of excess water from waste and the compaction of any undigestible material (fiber) into feces occurs in the large intestine, which is also called the colon.
ingestion, absorption, digestion and elimination
The main function of the large intestines is to consolidate and propel unused and undigested food material towards the anus for expulsion. It also provides a site for the manufacture of some vitamins (B and K) that are then absorbed into the blood stream; and is also the last point of water re-absorption Diarrhea is caused by any condition that expels the fecal matter before water re-absorption has had a chance to occur.
\
does absorption occur when mechanical or chemical digestion
does absorption occur when mechanical or chemical digestion
in the stomach
large intestine
small intestine
After food is chewed it takes 5-10 seconds for it to pass down the esophagus and into the stomach, where it spends 2-6 hours being partially digested. Final digestion and nutrient absorption occur in the small intestine over a period of 5-6 hours. In 12-24 hours, any undigested material passes through the large intestine, and feces are expelled through the anus.
After food is chewed it takes 5-10 seconds for it to pass down the esophagus and into the stomach, where it spends 2-6 hours being partially digested. Final digestion and nutrient absorption occur in the small intestine over a period of 5-6 hours. In 12-24 hours, any undigested material passes through the large intestine, and feces are expelled through the anus.
Undigested food passes along through the large intestine, here the water is absorbed from the undigested food into the body. Once it has passed along the undigested food ends up in the rectum.
digestiv system