Essays on the digestive system

Chewing, which takes place in the mouth, seems simple enough - teeth tear and crush the moistened food to a fine paste until it is ready to be swallowed. Food moves along the GIT by a wave like motion called peristalsis that breaks down the food mechanically.

Even in astronauts, food passes through the esophagus into the weightlessness of space. The contractions move food through the digestive system. From that point on, the major function of the digestive system is to reclaim water.

Absorption is where substances pass through the walls of parts of the digestive tract into the bloodstream. The size of the stomach enables you to eat a few large meals a day, rather than having a nibble at a time.

The following accessory structures aid this early stage of digestion: Ingestion which involves the taking in of food Digestion which may take two Essays on the digestive system The food ends up in a semi-liquid form that is called chyme. But there is a great deal more than that.

It produces pancreatic juices, containing enzymes, which play an important role in the chemical digestion of food.

The Digestive System

Its walls produce a powerful combination of enzymes and strong acids, and contractions of its smooth muscles thoroughly mix the food as you swallow. The break down activities that begin in the mouth are completed in the small intestine.

Mouth The process of digestion begins in the mouth where food is chewed until it reaches a consistency whereby it can be swallowed.

Their role is to break down food and deliver the products to the blood for dispersal to the body cells. Food enters the mouth, where the work of the digestive system begins. The function of the digestive system is to convert foods into simple molecules that can be absorbed and used by the cells of the body.

Anatomy And Physiology Of The Digestive System Essay Sample

Saliva also moistens food which helps it to be swallowed more easily. Most of the absorption of nutrients takes place in the ileum through small projections called villi.

The pancreas also produces the hormones insulin and glucagon directly into the bloodstream, which is termed an endocrine function. It assists the process of chewing and man oeuvres food to a position where it can be swallowed easily.

As a chyme enters from the stomach, it is mixed with enzymes and digestive fluids from the other accessory digestive organs and even from the lining of the duodenum itself.

After the bolus is swallowed, it passes through the esophagus, or food tube, into the stomach. Examples include water, minerals, and materials that come from the breakdown of food particles. The digestive system and how it works The human digestive system, like those of other vertebrates, is built around an alimentary canal - a one way tube that passes through the body.

The surfaces of the teeth, which are much tougher than ordinary bone, are protected by a coating of mineralized enamel. The duodenum is the first of three parts of the small intestine, and its the place where most of the chemical work of digestion takes place.

The undigested food that remains in the tract leaves the body through the anus as feces. Pharynx — allows the passage of both food and air. The organs of the digestive system include the oral cavity mouthesophagus, stomach, small and large intestine and rectum. Mouth Begins to break down food into small pieces through mechanical digestion; enzymes in saliva in the mouth starts the process of chemical digestion.

Food is also broken down chemically by the action of enzymes and bacteria. This enzyme begins the process of breaking down carbohydrates.

Digestive System Quizlet

Digestive System The structures in the body that work together to transform the energy and materials in food into forms the body can use.

Esophagus The transport tube that carries chewed food to the stomach Stomach Continues the process of mechanical digestion; and secretes gastric juices that continue the process of chemical digestion started in the mouth Small Intestines The organ where most of the chemical digestion of food takes place; nutrients from food are also absorbed through the small intestines Large Intestines The organ where water is absorbed from the food and taken into the bloodstream; prepares the remaining undigested food for elimination from the body.

Digestion The process of breaking down food into usable materials. The entire small intestine is coiled like a hose and the inside surface is full of many ridges and folds. Elimination is the process by which undigested foods leave the body. Rectum and anus The rectum is a short tube that stores solid waste until it is eliminated from the body through the anus.Anatomy And Physiology Of The Digestive System Essay Sample The digestive system is basically a tube running through the body from the mouth to the anus.

The organs of the digestive system include the oral cavity (mouth), esophagus, stomach, small and large intestine and rectum.

Digestive System The structures in the body that work together to transform the energy and materials in food into forms the body can use.

Essay on The Digestive System of the Human Body - The digestive system is a very important system in the human body. It is a group of organs that work together to. The stomach is a muscular, hollow organ in the human digestive system, and is one of the primary sites of digestion.

It is filled with gastric acid, a powerful acid that breaks down food with relative ease, digesting most foods in about 4 or 5 hours.

The Digestive System This Essay The Digestive System and other 64,+ term papers, college essay examples and free essays are available now on mint-body.com Autor: review • November 5, • Essay • 3, Words (16 Pages) • 1, Views4/4(1).

Learn anatomy test digestive system questions essay with free interactive flashcards. Choose from different sets of anatomy test digestive system questions essay flashcards on Quizlet.

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Essays on the digestive system
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