ENGLISH DIGESTIV SISTEM

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INSTITUTO SUPERIOR POLITÉCNICO DE MANICA
AGRICULTURE DIVISION
LICENSING COURSE IN ZOOTECHNICAL ENGINEERING
The Importance of digestive system
Teacher: Godwen Verumo, PhD 
INSTITUTO SUPERIOR POLITÉCNICO DE MANICA
AGRICULTURE DIVISION
LICENSING COURSE IN ZOOTECHNICAL ENGINEERING
The Importance of digestive system
Teacher: Godwen Verumo, PhD 
Students:
Osvaldo Orlando Cadeado 
THE IMPORTANCE OF DIGESTIVE SYSTEM
Rabia Songa
Paula Zabura Adamuge 
Stiven Calby Alberto Alfai
Shelton Thaibo 
Trindade Simão Júnior 
Introduction 
The food requirement for organisms is based on energy production, growth and metabolism and the regulation of various hormonal processes. 
The digestive system converts the food we eat into its simplest forms, such as glucose (sugars), amino acids (which make up proteins) or fatty acids (which make up fats). The broken down food is then absorbed into the bloodstream from the small intestine and the nutrients are transported to every cell in the body.
Digestive system
The digestive system is made up of a series of hollow organs that form a long, tortuous tube that runs from the mouth to the anus. The inside of the tube is lined with a membrane called mucous. The lining of the mouth, stomach and intestines contain tiny glands that produce juices that contribute to the digestion of food.
There are two other solid organs with digestive functions, the liver and the pancreas, which produce juices that reach the intestine through small channels. 
Importance of the digestive system
When food enters the body, it is not in a form that the body can take advantage of for nourishment. The food and water that is consumed must be transformed from the mouth by chewing into smaller molecules of nutrients that are swallowed and before being absorbed into the blood and transported to cells throughout the body. 
Digestion is the process by which food and drink are broken down into their smallest parts so that the body can use them as a source of energy and to form and nourish cells.
		The digestion process
Digestion involves mixing food, passing it through the digestive tract, and chemically breaking down large molecules into smaller ones. It starts in the mouth, when we chew, and ends in the small intestine. The chemical process varies slightly by food class.
Grasping food animals hold food according to their characteristics, structure and organs in charge and responsible for this function.
The digestion process
Chewing is closely related to the type of dentition of each species, and has as main purpose the fragmentation of food, thus increasing its surface and ensuring mixing with saliva, thus facilitating swallowing.
Swallowing Crushed and ensalivated foods are swallowed. Swallowing starts voluntarily and ends reflexively. The tongue leads the food bolus to the entrance of the pharynx where the swallowing points determine the swallowing reflex; swallowing only occurs when there is something solid or liquid to trigger the reflex.
Absorption and transport of nutrients and their metabolism.
The glands of the digestive system are of fundamental importance in the process of digestion, as they produce both the juices that break down food and the hormones that control the process.
Digested food molecules and water and minerals from the diet are absorbed in the upper part of the small intestine. Absorbed materials pass through the mucosa and into the blood, which distributes them to other parts of the body for storage or to undergo other chemical changes. As stated before, this part of the process varies depending on the type of nutrient.
Conclusion 
The digestive system breaks food down into smaller pieces using: movement (chewing, squeezing and mixing) and digestive juices (stomach acid, bile and enzymes).
The digestive system is important for breaking down food into nutrients, which the body uses for energy, growth and cell repair and digestion begins in the mouth with chewing and ends in the small intestine where absorption occurs and what is unnecessary is excreted through the anus.
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