How do the human digestive system works?

Answer 1

First, the food goes into the mouth. You use your teeth to break it into smaller pieces. Salivary glands produce fluid that helps break the food down. The food then travels down the esophagus, to the stomach. The stomach churns the food and produces acid to help in digestion. It then goes into the 20-foot long small intestine, which has many vilii (finger-like things) poking out of the walls, which take the vitamins and nutrients from the food. Bile, a digestive juice made by the liver that was stored in the gall bladder also helps take the vitamins and nutrients out. Finally, it goes in the large intestine and the leftover water is absorbed, with help from microbes like Klebsiella, or bacteroides (basically bacteria). The food waste is now in the rectum or anus, which controls its release.

Answer 2

The digestive system works when you put food in your mouth and break it down. Then soon it takes a trip down the esophagus to the stomach. Then the stomach breaks it down even more to a usable form. Then it goes to the liver and has all of its bad stuff taken out and then goes to the gallbladder. Soon It goes to the large intestine to the small intestine and the nutrients and energy are taken out and is put into your veins to carry to the body cells. Then all the garbage is taken to the kidneys and is then brought down the ureter to the bladder. Then all the water waste goes out the urethra and out of your body.

Answer 3

The food begins to digest in the mouth; it is broken down by saliva then it travels to the stomach where it is broken down further. The nutrients are taken from the food in the intestines, and the remaining waste is released in a bowel movement.

Answer 4

You chew your food, swallow it and then it goes into your stomach.

Your stomach makes the food into a strange sort of paste, and then that goes into your Liver.

Your Liver sends the food down and through your Large Intestine, and that becomes your muck (Poo)

If you have a drink, it goes in the same path but it goes down the Small Intestine instead. Then that becomes your Yellow Liquid (Wee)

Answer 5

Digestion starts in the mouth, when we chew the food. The teeth grind the food into small pieces which is called mechanical digestion. This is the process of physical force to digest the food. Another way of digestion is chemical digestion, which uses the chemicals of the body to digest food. While the teeth are grinding away at the food, saliva mixes in with the food via the salivary glands in the mouth and throat. This is a good example of chemical digestion as the food is getting mixed with chemicals to break down into smaller pieces.

Once the food is small enough to swallow it enters the 25cm long muscular tube, the esophagus. The esophagus carries the food from the mouth to the stomach by using a type of muscle action called peristalsis. It works when the muscles contract and relax. While the esophagus is using the muscle action of contracting and relaxing, the salivary, chewed up food is slowly making its way down into the stomach.

When the food reaches the stomach, it stays in there for 1-6 hours depending on the type of food and how hard it is to digest. The food is mixed with digestive/gastric juices, while all the stomach muscles churn and grind up the food, another example of mechanical and chemical digestion. The juices in the stomach contain hydrochloric acid which breaks down the proteins from the food (with the help of an enzyme called pepsin) and destroys the micro organisms. The lining of the stomach is covered with mucus, which protects the stomach from the hydrochloric acid in the gastric/digestive juices. Food is stored in the stomach until the next stage of digestion.

The pancreas, liver and gall bladder aren't an organ where the food would travel to, however they are responsible for producing the juices the organs will use to break down the food in order to extract the good nutrients from the bad ones.

The pancreas produces pancreatic juices which contain enzymes in order to help digest carbohydrates, lipids and proteins. The juices made from the pancreas are delivered to the small intestine via the pancreatic duct.

The liver produces a substance which acts as a deterrent to break down lipids into smaller droplets. This substance is called bile, and enables an increase of surface area and so therefore helps the enzymes break the lipids down.

The bile is then stored in the gall bladder until it is needed after meals which would then be transported to the small intestine through the bile duct.

The main organ of digestion is the small intestine. This is responsible for separating the good nutrients from the bad and putting them in the blood or out of the body. Muscles in the intestinal walls continue to squeeze the food through the digestive system, mixing the food and digestive juices. The small intestine produces juices itself, which complete the digestion of carbohydrates, lipids and proteins. The small intestine's walls are lined with finger like projections called villi. The villi contain networks of capillaries, that when once the food has been fully digested, the essential nutrients leave via the capillaries and into the blood stream.

The remaining of the digested food is waste. This food enters the large intestine, where water is reabsorbed into the body from the food. The waste that remains are stored in the rectum until they are expelled from the body thought the anus.

Answer 6

The digestive system consists of the mouth, salivary glands, food pipe, stomach, small intestine, large intestine, pancreas and liver. The food first enters the mouth. Then saliva from the salivary gland changes starch into sugar. Them we chew it and send it down the food pipe. the stomach sends digestive juices which make the food into as soup. Then the food passes into the small intestine then into large intestine and then the waste material is removed from the body through the anus.

Answer 7

The digestive system works first when a person eats with the saliva breaking down the chemicals in the food. The food than travels down the throat into the esophagus to your stomach. The food than goes to the small intestines where it can remain for as long as four hours with the food being broke down even more. Next the food travels to the liver where harmful substances are removed. The large intestines is next in the digestive tract with the food passing through the colon and finally the rectum.

Answer 8

the digestion starts at the mouth when you start to chew and then your mouth produces saliva.then you poo alot

Answer 9

digestive start in the mouth.As you chew you break up the food particles and sailiva starts the digestive process down the throat to esopagus which empties into th