Anatomy And Physiology Of Digestive System Pdf

anatomy and physiology of digestive system pdf

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The gastrointestinal tract GIT consists of a hollow muscular tube starting from the oral cavity, where food enters the mouth, continuing through the pharynx, oesophagus, stomach and intestines to the rectum and anus, where food is expelled.

Human digestive system

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract GI tract. The alimentary canal is made up of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. In addition to the alimentary canal, there are several important accessory organs that help your body to digest food but do not have food pass through them. Accessory organs of the digestive system include the teeth, tongue, salivary glands, liver, gallbladder, and pancreas. Food begins its journey through the digestive system in the mouth, also known as the oral cavity. Inside the mouth are many accessory organs that aid in the digestion of food—the tongue, teeth, and salivary glands.

Gastrointestinal system anatomy

The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body. The digestive system is divided into two major parts:. The treatment of food in the digestive system involves the following seven processes:. Propulsion is the movement of food along the digestive tract. The major means of propulsion is peristalsis, a series of alternating contractions and relaxations of smooth muscle that lines the walls of the digestive organs and that forces food to move forward.


Appetite is controlled mainly by sensors in the gastrointestinal tract, which detect the physical presence of food and prompt the GI tract to produce a range of.


Basic Anatomy and Physiology of the Gastrointestinal Tract

The gastrointestinal tract begins at the mouth and ends at the anus Fig. Its purpose is to mechanically and enzymatically digest food, absorb nutrients and water, protect the body from microbial invasion, and expel feces. Food enters the mouth where mechanical and enzymatic digestion begins and then is propelled down the esophagus and into the stomach where digestion continues. As the food bolus passes through the small intestine, further digestion and absorption take place with the help of enzymes secreted by the stomach, small intestine, liver, and pancreas.

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The digestive system includes the digestive tract and its accessory organs, which process food into molecules that can be absorbed and utilized by the cells of the body. Food is broken down, bit by bit, until the molecules are small enough to be absorbed and the waste products are eliminated. The digestive tract, also called the alimentary canal or gastrointestinal GI tract , consists of a long continuous tube that extends from the mouth to the anus. It includes the mouth, pharynx , esophagus , stomach , small intestine , and large intestine. The tongue and teeth are accessory structures located in the mouth. The salivary glands, liver , gallbladder , and pancreas are major accessory organs that have a role in digestion.

 - Это не ребро или палец, как в церквях Галиции. Вам и в самом деле стоило бы задержаться и посмотреть. - Может быть, я так и сделаю. - Mala suerte, - вздохнул лейтенант.  - Не судьба.

Introduction to the Digestive System

За десять лет их знакомства Стратмор выходил из себя всего несколько раз, и этого ни разу не произошло в разговоре с .

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

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PDF | The gastrointestinal tract has recently come to the forefront of multiple research fields. It is now recognized as a major source of signals.

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