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

Constipation refers to stools which are generally hard, less plentiful and less frequent than normal (less than 3 stools per week).

Some causes:

  • Bad eating habits
  • Lack of physical exercise
  • Taking certain medication
  • Strong emotional responses
  • Psychological factors

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Constipation

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WHAT IS CONSTIPATION?

In contrast to diarrhoea, constipation corresponds to hard stools that are less frequent and less voluminous than usual. It leads to a delay or even problems with expelling stools. The frequency of evacuation of stools varies from one person to another, but it roughly ranges from three times per day to three times per week. Constipation occurs when the frequency is less than three times per week.

WHAT ARE THE CAUSES?

Among some of the causes of constipation, the first is poor eating habits that produce stools with a low water or fibre content. Not getting enough exercise or taking certain medication (such as anti-inflammatories), may slow down peristalsis in the digestive tract. Muscle contractions are not able to move food residues fast enough, causing stools to stay in the colon too long. This is where the body reabsorbs a lot of water so, the stools then become hard and difficult to pass.

As with diarrhoea, intense emotions such as anxiety or stress can also trigger constipation. Sometimes, the anal sphincter (which is the muscle of the anus) contracts instead of relaxing. In doing so, it prevents stools from being expelled and they accumulate in the rectum instead. The reasons are often related to psychological factors. Diarrhoea phobia is the fear of having urgent diarrhoea attacks and not being able to hold things in before finding a toilet. This fear can delay and even stop defaecation.

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