Stomach
In a human's digestive tract, the final site of digestion is the small intestine.
The digestive system breaks down ingested food into usable nutrients. It also provides a site where these nutrients are absorbed into the circulatory system for transport to all body cells. Lastly, it eliminates solid waste -- undigested food.
It may mean a site but most like a book by that name. You ride along with a meal some one ate.
The mouth allows you to ingest food, or take food into your body. In addition, the mouth is the site of the first mechanical and chemical digestion in the GI tract.
amylase
The stomach plays a crucial role in the digestive system by breaking down food into a semi-liquid form called chyme. It achieves this through the secretion of gastric juices, which contain hydrochloric acid and digestive enzymes that help to further digest proteins and kill harmful bacteria. Additionally, the stomach serves as a temporary storage site for food, regulating its release into the small intestine for further digestion and nutrient absorption.
The small intestine is the site of most chemical digestion and absorption in the digestive tract. During absorption, nutrients enter the bloodstream, and the circulatory system can then transport these nutrients to all body cells.
NO
Water that you drink, like all nutrients, enters the blood in the digestive tract. Water is different for example from proteins and fats in that it gets absorbed throughout the digestive tract and not only in a particular part such as the stomach or a part of the intestines. The major site of water readsorption from the intestines however is the large intestine (colon). Here, the removal of water and uptake into the blood contributes towards drying and concentrating the stool.
upper respiratory tract
urinary tract infection, site not specified
The duodenum is the main site for digestion in the small intestine. Here, more enzymes are added to the chyme, some of which come from the intestinal wall and others from the pancreas. The pancreas is one of the major glands of the body, and has two functions: releasing digestive enzymes into the gut, and releasing hormones into the blood. Pancreatic juice also contains sodium bicarbonate, which neutralizes the acid chyme arriving in the duodenum, and provides an alkaline environment for optimum functioning of pancreatic and intestinal enzymes. These enzymes include proteases to continue protein digestion, amylase for carbohydrate digestion, and lipase for fat digestion. Enzymes in the intestinal juice generally start off the later stages of digestion.