The function of the human digestive

Function of the Digestive System

This breaks down fats to some degree though is not as efficient as the pancreatic lipase. Digestive System of the Human Body If you observe the diagram of the digestive system, you will notice that it is made up of different organs that function together.

Adult digestive system Diaphragm The diaphragm is an important part of the body's digestive system. Most of the oral cavity is lined with oral mucosaa mucous membrane that produces a lubricating mucusof which only a small amount is needed.

There are other glands on the surface of the tongue that encircle taste buds on the back part of the tongue and these also produce lingual lipase. The vestibule is the area between the teeth, lips and cheeks, [4] and the rest is the oral cavity proper. The concentrations of bicarbonate, chloride, potassiumand sodium in saliva are directly related to the rate of their flow.

The mucous membrane in the mouth continues as the thin mucosa which lines the bases of the teeth. As these electron transfer reactions occur, energy is released that is used to pump the hydrogen ions across that membrane and into the area between the two mitochondrial membranes.

Large intestine In the large intestine[2] the passage of the digesting food in the colon is a lot slower, taking from 12 to 50 hours until it is removed by defecation.

Human Body Systems – Functions, locations, anatomy, definition, picture

Saliva also contains a glycoprotein called haptocorrin which is a binding protein to vitamin B Immune system homeostasis[ edit ] Beneficial bacteria also can contribute to the homeostasis of the gastrointestinal immune system.

The soft palate ends at the uvula. These glands are termed Von Ebner's glands which have also been shown to have another function in the secretion of histatins which offer an early defense outside of the immune system against microbes in food, when it makes contact with these glands on the tongue tissue.

The laryngopharynx connects to the esophagus and it serves as a passageway for both air and food. Digestive, Central Nervous, Circulatory, and Endocrine. In lipid metabolism it synthesises cholesterol.

It was the findings indescribing the first olfactory receptors that helped to prompt the research into taste. When the chyme is exhausted of its nutrients the remaining waste material changes into the semi-solids called feces, which pass to the large intestine, where bacteria in the gut flora further break down residual proteins and starches.

The stomach wall has an inner lining that secretes peritoneal fluid and mucus to protect the stomach cavity from erosion due to the presence of gastric juices and acid. The stomach, originally lying in the midline of the embryo, rotates so that its body is on the left.

The main purpose of the gallbladder is to store and release bile, or gall. Most food digestion takes place in the small intestine.

A common fungal infection is candidiasis commonly known as thrush which affects the mucous membranes of the mouth. Bile is stored in the gallbladder for release when food is discharged into the duodenum and also after a few hours.

The concentration of potassium in the blood is often higher than that in the blood plasma, up to 20 millimoles per litre, which accounts for the sharp and metallic taste of saliva when flow is brisk.

But, making ATP requires energy. The breaking down into micelles creates a much larger surface area for the pancreatic enzyme, lipase to work on. In the duodenum, pancreatic lipase is secreted together with a co-enzymecolipase to further digest the fat content of the chyme. Cells in the lining of the stomach secrete a strong acid and powerful enzymes that are responsible for the breakdown process.

In the duodenum, pancreatic lipase is secreted together with a co-enzymecolipase to further digest the fat content of the chyme. However the large intestine is mainly concerned with the absorption of water from digested material which is regulated by the hypothalamus and the re absorption of sodiumas well as any nutrients that may have escaped primary digestion in the ileum.Click the system names to view each one on the image and to get a description of each system.

Digestive System The digestive system consists of the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as mouth, esophagus, stomach and intestines are part of the gastrointestinal tract.

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder).

The Structure and Function of the Digestive System

Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The human digestive system is a series of organs that converts food into essential nutrients that are absorbed into the body and eliminates unused waste material.

It is essential to good health. The mouth. The mouth is the first organ in the digestive system, And it is a cavity in which the teeth and the tongue are existed, and the salivary glands are opened, The function of the mouth is cutting and grinding the food by the teeth, And It digests the starch into the sugar.

Human digestive system

Voyage inside the cell Two types of cells that make up all living things on earth: prokaryotic and eukaryotic. Prokaryotic cells (check this video), like bacteria, have no 'nucleus', while eukaryotic cells, like those of the human body,, a human cell is enclosed by a cell, or plasma, membrane.

Enclosed by that membrane is the cytoplasm (with associated organelles) plus a nucleus.

The function of the human digestive
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