The digestive system

Historical representations of digestion

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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

From the 18th to the 20th century

The arrival of chemistry was to be the start of a new era in the understanding of digestion. We discovered how pancreatic and gastric juices and bile act, based on human studies.

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From the 18th to the 20th centuries

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SPALLANZANI

In the 18th century, Spallanzani studied digestion in animals but wanted to do research on humans. He decided to make himself vomit on an empty stomach, then filled a tube with the liquid he had harvested. He then put cooked, chewed beef into the tube and placed it in an oven to imitate the temperature in his stomach. After some 35 hours, the meat had lost all its texture.

BEAUMONT

In the 19th century, Beaumont, an American surgeon, took advantage of the opportunity of having a patient, who had been wounded by a bullet in the abdomen, to explore things further. The wound healed but left a direct entry point into the stomach. Beaumont was then able to remove digestive juices and watch digestion as it was happening in the patient's stomach.

MECHANICAL AND CHEMICAL TRANSFORMATION

Digestive juices were identified at the start of the 20th century and it was established that digestion is a series of mechanical and chemical transformation.

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