The digestive system

Digestive phenomena

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The organs in the digestive tract
The role of the digestive system The role of the digestive system The role of the digestive system The role of the digestive system The role of the digestive system The role of the digestive system The role of the digestive system Anatomy of the digestive tract Anatomy of the digestive tract The anatomy of the digestive tract The anatomy of the digestive tract The anatomy of the digestive tract The anatomy of the digestive tract The anatomy of the digestive tract The digestive glands The digestive glands The digestive glands The digestive glands The digestive glands The digestive glands The digestive glands The abdominal brain The abdominal brain The abdominal brain The abdominal brain The abdominal brain The abdominal brain The abdominal brain
The stages of digestion
Transforming food Transforming food Transforming food Transforming food Transforming food Transforming food Transforming food Mechanical and chemical transformation Mechanical and chemical transformation Mechanical and chemical transformation Mechanical and chemical transformation Mechanical and chemical transformation Mechanical and chemical transformation Mechanical and chemical transformation Digestion: from mouth to anus From the mouth to the anus From the mouth to the anus From the mouth to the anus The mouth The mouth The mouth The mouth The mouth The mouth The mouth The oesophagus The oesophagus The oesophagus The oesophagus The oesophagus The oesophagus The oesophagus The stomach The stomach The stomach The stomach The stomach The stomach The stomach The small intestine The small intestine The small intestine The small intestine The small intestine The small intestine The small intestine The large intestine The large intestine The large intestine The large intestine The large intestine Domestiquer et transformer la nature pour produire The large intestine The large intestine Intestinal flora Intestinal flora Intestinal flora Intestinal flora Intestinal flora Intestinal flora Intestinal flora
Historical representations of digestion
In the 2nd century In the 2nd century In the 2nd century In the 2nd century In the 2nd century In the 2nd century In the 2nd century In the 17th century In the 17th century In the 17th century In the 17th century In the 17th century In the 17th century In the 17th century From the 18th to the 20th century From the 18th to the 20th century From the 18th to the 20th century From the 18th to the 20th century From the 18th to the 20th century From the 18th to the 20th centuries From the 18th to the 20th century Today Today Today Today Today Today Today
Digestive phenomena
What is a digestive event? What is a digestive event? What is a digestive event? What is a digestive event? What is a digestive event? What is a digestive event? What is a digestive event? Food going down the wrong way Food going down the wrong way Food going down the wrong way Food going down the wrong way Food going down the wrong way Food going down the wrong way Food going down the wrong way Eructation Eructation Eructation Eructation Eructation Eructation Eructation Hiccups Hiccups Hiccups Hiccups Hiccups Hiccups Hiccups Stomach ache Stomach ache Stomach ache Stomach ache Stomach ache Stomach ache Stomach ache Vomiting Vomiting Vomiting Vomiting Vomiting Vomiting Vomiting Borborygmus Borborygmus Borborygmus Borborygmus Borborygmus Borborygmus Borborygmus Intestinal wind Intestinal wind Intestinal wind Intestinal wind Intestinal wind Intestinal wind Intestinal wind Diarrhoea Diarrhoea Diarrhoea Diarrhoea Diarrhoea Diarrhoea Diarrhoea Constipation Constipation Constipation Constipation Constipation Constipation Constipation

Intestinal wind is expelled at both ends of the digestive tract.

  • When expelled through the mouth, it is called belching (or burping).
  • When expelled through the anus, it is called flatulence (or farting).

Intestinal gases are produced by bacteria in the colon when there is fermentation of leftover food.

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Intestinal wind

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WHAT IS INTESTINAL WIND?

The digestive tract contains intestinal gases. Release of these gases through the anus is quite normal and is actually a sign that the digestive tract is functioning well. On average, a person releases 0.5 to 1.5 litres of gas each day, over the span of 12 to 25 episodes. These gases are released at the two ends of the digestive tract – either at the mouth (through burping) or at the anus (through flatulence).

WHAT ARE THE CAUSES?

Intestinal gases consist of nitrogen, oxygen and carbon dioxide produced by the bacteria present in the digestive tract. These bacteria ferment food residues and gas is released during this breakdown process.

There are also hydrogen, methane and sulphur-containing substances. These sulphated gases have a distinct odour, and the human nose can easily detect concentrations of hydrogen sulphide, even low ones.

Fermentation of certain kinds of food generates more gas than others, namely pulses such as kidney beans. Their outer shell has a large amount of sugar, which the intestinal flora easily ferments. Starchy food such as pasta, corn and wheat can also generate gas during fermentation.

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