What are the functions and characteristics of the following: small intestine, large intestine, and kidneys.

The small intestine, also known as the small bowel, is a 21-foot long tube in which the first segment, the duodenum, breaks down fats, starches, and proteins into fatty acids with enzymes sent by the pancreas and bile discharged from the liver. The last segments, jejunum, and ileum, are in charge of the absorption of nutrients.

The Colon, also known as the large intestine, is around five feet long muscular tube made up of the ascending colon, the transverse colon, the descending colon, and the sigmoid colon, that connects the small intestine to the rectum and prepares waste for defecation.

The kidneys are located behind the intestines, and they filter the blood that the heart pumps through the renal artery.

Explanation:

The digestive system breaks down the food we eat to be able to use the nutrients and energy the body needs to sustain and reconstruct cells and to provide energy to the muscles.