Describe the digestive tract

The small intestine does not have large amounts of mucus like the stomach because this would prevent absorption of nutrients from ocurring efficently. The small intestine does not have large amounts of mucus like the stomach because this would prevent absorption of nutrients from ocurring efficently.

The following discussion explains how each part digests nutrients.

Describe the digestive tract. The digestive system is made up of the gastrointestinal tractalso called the GI tract or digestive tractand the liver pancreas and gallbladder. The GI tract is a series of hollow organs joined in a long twisting tube from the mouth to the anus. The digestive tract begins at the mouth and ends at the anus.

It is like a long muscular tube up to 10 metres long with digestive organs attached along the way. A large reservoir of microbes such as bacteria live within the large intestine and to a lesser degree in vthe rest of the digestive system. The gastrointestinal tract in humans begins at the mouth continuing through the esophagus stomach and the small and large intestines.

The GI tract is about 9 meters in length. There are many supporting organs such as the liver which helps by secreting enzymes that are necessary for the digestion of food. The human GI tract can be divided into two halves namely.

Extending from the mouth to the anus the digestive tract is one of the largest systems in the human body. It contains organs that regulate food intake its digestion and absorbtion of the useful materia that it contains. In addition to this the digestive system also eliminates the waste products from food and products from various endogenous.

Anatomically the digestive system is made up of the gastrointestinal tract along with accessory organs such as the liver pancreas and gallbladder. The hollow organs that make up the gastrointestinal tract GI tract include the mouth stomach oesophagus small intestine and large intestine that contains the rectum and anus. The digestive tract is a long muscular tube lined with epithelium specialized for digestion and absorption of food and water.

Food moves along the digestive system from the mouth where it is ingested to the anus where the undigested and unabsorbed remnants of food and some additional waste are eliminated. The digestive tract or gastrointestinal tract is a long twisting tube that starts at the mouth and ends at the anus. It is made up of a series of muscles that coordinate the movement of food and.

The digestive system is comprised of the alimentary canal or the digestive tract and other accessory organs that play a part in digestionsuch as the liver the gallbladder and the pancreas. The alimentary canal and the GI tract are terms that are sometimes used interchangeably. The digestive system consists of the digestive tract or gastro-intestinal GI.

Gastr ō-in-testin-ă l tract plus specific associatedorgans. Because the digestive tract is open at the mouth and anus the inside of the tract is continuous with the outside environment and food entering the digestive tract may contain not only useful nutrients but also indigestible components such as fiber or harmful. The digestive tract of the pig has five main parts.

The mouth esophagus stomach and small and large intestines. The following discussion explains how each part digests nutrients. The mouth is where food enters the digestive tract and where mechanical breakdown of food begins.

The teeth chew and grind food into smaller pieces. Your digestive system or gastrointestinal GI tract is responsible for digesting food and processing it to fuel your body. The GI system is divided into two sections.

The upper GI tract and the lower GI tract. The upper GI tract is responsible for starting digestion and preparing it for the lower GI tract to process and absorb nutrients. Thats because digestion actually begins in the brain.

This is the cephalic phase of digestion which is stimulated by the parasympathetic nervous system. When you see and smell food and even start thinking about eating the brain readies the digestive tract for nourishment. This anticipation stimulates the secretion of saliva in the mouth.

Stomach contents are very acidic. The mucus that lines the stomach prevents damage to the cells of the stomach from this acidic enviornment. The small intestine does not have large amounts of mucus like the stomach because this would prevent absorption of nutrients from ocurring efficently.

Therefore food must move slowly from the stomach to the. What is the gastrointestinal tract. The gastrointestinal tract is essentially a tube that extends from the mouth to the anus.

It has generally the same structure throughout. There is a hollow portion of the tube known as the lumen a muscular layer in the middle and a layer of epithelial cells. These layers are responsible for maintaining the mucosal integrity of the tract.

Mouth and oral structures. Little digestion of food actually takes place in the mouth. However through the process of mastication or chewing food is prepared in the mouth for transport through the upper digestive tract into the stomach and small intestine where the principal digestive processes take placeChewing is the first mechanical process to which food is subjected.