Digestive system and its functions pdf

Posted on Thursday, March 18, 2021 3:02:43 PM Posted by Joshua R. - 18.03.2021 and pdf, free pdf 3 Comments

digestive system and its functions pdf

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Your digestive system is uniquely constructed to do its job of turning your food into the nutrients and energy you need to survive. The main organs that make up the digestive system in order of their function are the mouth, esophagus, stomach, small intestine, large intestine, rectum and anus. Helping them along the way are the pancreas, gall bladder and liver. The mouth is the beginning of the digestive tract.

Human digestive system

This article — the fifth in a six-part series describes the physiology and functions of the large intestine, the last portion of the gastrointestinal tract, as well as common conditions of both the small and large intestine. In the large intestine — the final section of the gastrointestinal tract — absorption of water and electrolytes takes place and colonic bacteria complete the process of chemical digestion. The large intestine is also where faeces are formed from the remains of food and fluid combined with by-products of the body. Intestinal content is pushed back and forth by haustral contractions and antiperistaltic contractions, until faeces are finally pushed towards the anal canal by mass movements. This article, the fifth in a six-part series exploring the gastrointestinal tract, describes the anatomy and functions of the large intestine.

The Structure and Function of the Digestive System

Human digestive system , system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract , or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream. The system also consists of the structures through which wastes pass in the process of elimination and other organs that contribute juices necessary for the digestive process. The digestive tract begins at the lips and ends at the anus. It consists of the mouth , or oral cavity, with its teeth , for grinding the food, and its tongue , which serves to knead food and mix it with saliva ; the throat, or pharynx ; the esophagus ; the stomach ; the small intestine , consisting of the duodenum , the jejunum, and the ileum ; and the large intestine , consisting of the cecum , a closed-end sac connecting with the ileum, the ascending colon, the transverse colon, the descending colon, and the sigmoid colon , which terminates in the rectum.


nutrients. Purpose of digestion: 1) Supply Energy to the body for activity. 2).


Introduction to the Digestive System

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.

Human digestive system , system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract , or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream. The system also consists of the structures through which wastes pass in the process of elimination and other organs that contribute juices necessary for the digestive process. The digestive tract begins at the lips and ends at the anus. It consists of the mouth , or oral cavity, with its teeth , for grinding the food, and its tongue , which serves to knead food and mix it with saliva ; the throat, or pharynx ; the esophagus ; the stomach ; the small intestine , consisting of the duodenum , the jejunum, and the ileum ; and the large intestine , consisting of the cecum , a closed-end sac connecting with the ileum, the ascending colon, the transverse colon, the descending colon, and the sigmoid colon , which terminates in the rectum.

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion the tongue , salivary glands , pancreas , liver , and gallbladder. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages: the cephalic phase , the gastric phase , and the intestinal phase. The first stage, the cephalic phase of digestion, begins with gastric secretions in response to the sight and smell of food.

The digestive system is made up of the gastrointestinal GI tract—also called the digestive tract—and the liver, pancreas, and gallbladder.

Digestive system and its function

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:.

ТРАНСТЕКСТ не может с ним справиться. Сьюзан подумала о Стратморе, о том, как мужественно он переносит тяжесть этого испытания, делая все необходимое, сохраняя спокойствие во время крушения. Иногда она видела в нем что-то от Дэвида.

На поиски вируса нужно время, которого нет ни у нее, ни у коммандера. Но, вглядываясь в строки программы и думая, какую ошибку она могла допустить, Сьюзан чувствовала, что тут что-то не. Она запускала Следопыта месяц назад, и никаких проблем не возникло. Могли сбой произойти внезапно, сам по. Размышляя об этом, Сьюзан вдруг вспомнила фразу, сказанную Стратмором: Я попытался запустить Следопыта самостоятельно, но информация, которую он выдал, оказалась бессмысленной.

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 Где твои родители? - спросил Беккер. - В Штатах. - А связаться с ними пробовала. - Пустой номер. Наверное, уплыли на уик-энд с друзьями на яхте. Беккер заметил, что на ней дорогие вещи. - И у тебя нет кредитной карточки.

Под колесами быстро побежала авеню Луис Монтоно. Слева остался футбольный стадион, впереди не было ни одной машины. Тут он услышал знакомый металлический скрежет и, подняв глаза, увидел такси, спускавшееся вниз по пандусу в сотне метров впереди. Съехав на эту же улицу, оно начало набирать скорость, двигаясь прямо в лоб мотоциклу. Он должен был бы удариться в панику, но этого не произошло: он точно знал, куда держит путь. Свернув влево, на Менендес-пелайо, он прибавил газу.

COMMENT 3

  • The function of the digestive system is to break down the foods you eat, release their nutrients, and absorb those nutrients into the body. Probrajunon - 21.03.2021 at 00:21
  • Functions of the Digestive System. ▫ ingestion tract (mainly in the oral cavity and stomach) physically break down food the digestive tract and its accessory​. Platt C. - 22.03.2021 at 14:21
  • The major functions of the digestive tract include the following six processes As food enters and fills the stomach, its wall begins to stretch (at the same time the. Brandon R. - 28.03.2021 at 07:55

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