What occurs in the small intestine for food and the large intestine for water for distribution to the rest of the body?

Answer 1

When chyme (digested food from stomach) enters the Duodenum, Cholecystokinin is released, stopping hunger, triggering the release of bile (a waste product of the liver, that is stored in the gallbladder that breaks down fatty acids) and discharging enzymes from the pancreas which break down fats as well, along with carbs, proteins, and others. These are broken down as they pass through the Jejunum and the Ileum, but primarily in the Jejunum. In the Jejunum and the Ileum, tiny finger-like villi (singular, villus) rest on the walls, and they absorb glucose, fructose, and other simple materials that can be used as energy sources -- all of which were broken down in the gastrointestinal tract. They are never directly ingested from common foods. Once these are absorbed into the bloodstream, they reach the liver where they are broken down further. Unneeded amino acids are broken down into urea, a prime component of urine. Urea is sent to the kidneys. In the large intestine, some waters are absorbed during movement into the bloodstream of the passing waste product as it traverses the colon. When it reaches the rectum, it rests there until it is discharged. If it isn't, it returns back to the colon to absorb more water, probably to reduce weight and stress on the rectal ampella, where they are stored until discharge.